Step 0 Starting puzzle |
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9 |
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D |
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8 |
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Step 1 The number 3 does not yet appear in row E. Due to other 3s on the grid, the only place it can go is cell E3.
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A |
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B |
9 |
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5 |
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D |
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9 |
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7 |
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Step 2 The number 3 does not yet appear in column 4. Due to other 3s on the grid, the only place it can go is cell I4.
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A |
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B |
9 |
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5 |
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1 |
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D |
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9 |
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8 |
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3 |
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G |
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1 |
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3 |
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7 |
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3 |
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Step 3 The number 1 is missing from row H and its only possible position is cell H8.
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9 |
A |
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1 |
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3 |
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B |
9 |
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1 |
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4 |
C |
5 |
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1 |
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D |
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4 |
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6 |
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E |
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3 |
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1 |
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9 |
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2 |
8 |
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3 |
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G |
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6 |
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1 |
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3 |
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7 |
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1 |
6 |
I |
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Step 4 Because of the number 1 just placed, the only position in column 9 for another 1 is cell F9.
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8 |
9 |
A |
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1 |
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3 |
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B |
9 |
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1 |
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4 |
C |
5 |
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1 |
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2 |
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D |
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4 |
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6 |
3 |
E |
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3 |
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1 |
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9 |
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2 |
8 |
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3 |
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1 |
G |
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6 |
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1 |
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9 |
H |
3 |
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7 |
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Step 5 In box A7-C9, each of the cells A8 and A9 and C9 can only take one of the numbers 5 or 7 or 8. These 3 cells will use up these 3 numbers between them. Therefore the numbers can be eliminated from A7, C7, B8 in box A7-C9. The remaining possibilities are marked with small numbers.
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8 |
9 |
A |
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1 |
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3 |
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69 |
578 |
578 |
B |
9 |
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1 |
3 |
4 |
C |
5 |
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1 |
369 |
2 |
78 |
D |
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4 |
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6 |
3 |
E |
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5 |
3 |
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1 |
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9 |
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F |
2 |
8 |
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3 |
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1 |
G |
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6 |
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1 |
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9 |
H |
3 |
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7 |
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1 |
6 |
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3 |
6 |
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Step 6 Cell B8 can only contain the number 3 since all other possible numbers have been eliminated.
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8 |
9 |
A |
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1 |
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3 |
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69 |
578 |
578 |
B |
9 |
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1 |
3 |
4 |
C |
5 |
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1 |
69 |
2 |
78 |
D |
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4 |
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6 |
3 |
E |
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5 |
3 |
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1 |
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9 |
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2 |
8 |
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3 |
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1 |
G |
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6 |
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1 |
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H |
3 |
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7 |
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1 |
6 |
I |
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3 |
6 |
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Step 7 Because of the number 3 just placed, the only position in row C for another 3 is cell C2.
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8 |
9 |
A |
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1 |
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3 |
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69 |
578 |
578 |
B |
9 |
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1 |
3 |
4 |
C |
5 |
3 |
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1 |
69 |
2 |
78 |
D |
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4 |
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6 |
3 |
E |
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5 |
3 |
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1 |
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9 |
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F |
2 |
8 |
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3 |
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1 |
G |
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6 |
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1 |
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9 |
H |
3 |
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7 |
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1 |
6 |
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3 |
6 |
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Step 8 Because of the number 3 just placed, the only position in column 7 for another 3 is cell G7.
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8 |
9 |
A |
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1 |
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3 |
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69 |
578 |
578 |
B |
9 |
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1 |
3 |
4 |
C |
5 |
3 |
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1 |
69 |
2 |
78 |
D |
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4 |
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6 |
3 |
E |
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5 |
3 |
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1 |
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9 |
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F |
2 |
8 |
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3 |
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1 |
G |
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6 |
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1 |
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3 |
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9 |
H |
3 |
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7 |
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1 |
6 |
I |
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3 |
6 |
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4 |
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Step 9 The number 4 is missing from column 2 and its only possible position is cell H2.
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7 |
8 |
9 |
A |
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1 |
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3 |
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69 |
578 |
578 |
B |
9 |
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1 |
3 |
4 |
C |
5 |
3 |
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1 |
69 |
2 |
78 |
D |
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4 |
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6 |
3 |
E |
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5 |
3 |
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1 |
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9 |
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F |
2 |
8 |
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3 |
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1 |
G |
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6 |
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1 |
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3 |
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9 |
H |
3 |
4 |
7 |
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1 |
6 |
I |
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3 |
6 |
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4 |
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Step 10 Cell G1 can only contain the number 8 since all other numbers are somewhere in its row, column or box.
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5 |
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7 |
8 |
9 |
A |
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1 |
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3 |
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69 |
578 |
578 |
B |
9 |
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1 |
3 |
4 |
C |
5 |
3 |
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1 |
69 |
2 |
78 |
D |
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4 |
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6 |
3 |
E |
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5 |
3 |
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1 |
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9 |
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2 |
8 |
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3 |
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1 |
G |
8 |
6 |
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1 |
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3 |
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9 |
H |
3 |
4 |
7 |
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1 |
6 |
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3 |
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4 |
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Step 11 The number 8 is missing from column 8 and its only possible position is cell A8.
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7 |
8 |
9 |
A |
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1 |
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3 |
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69 |
8 |
57 |
B |
9 |
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1 |
3 |
4 |
C |
5 |
3 |
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1 |
69 |
2 |
7 |
D |
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4 |
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6 |
3 |
E |
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5 |
3 |
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1 |
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9 |
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F |
2 |
8 |
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3 |
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1 |
G |
8 |
6 |
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1 |
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3 |
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9 |
H |
3 |
4 |
7 |
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1 |
6 |
I |
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3 |
6 |
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4 |
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Step 12 The number 5 is missing from box A7-C9 and its only possible position is cell A9.
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4 |
5 |
6 |
7 |
8 |
9 |
A |
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1 |
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3 |
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69 |
8 |
5 |
B |
9 |
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1 |
3 |
4 |
C |
5 |
3 |
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1 |
69 |
2 |
7 |
D |
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4 |
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6 |
3 |
E |
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5 |
3 |
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1 |
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9 |
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F |
2 |
8 |
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3 |
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1 |
G |
8 |
6 |
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1 |
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3 |
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9 |
H |
3 |
4 |
7 |
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1 |
6 |
I |
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3 |
6 |
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4 |
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Step 13 The number 7 is missing from box A7-C9 and its only possible position is cell C9.
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3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
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1 |
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3 |
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69 |
8 |
5 |
B |
9 |
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1 |
3 |
4 |
C |
5 |
3 |
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1 |
69 |
2 |
7 |
D |
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4 |
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6 |
3 |
E |
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5 |
3 |
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1 |
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9 |
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F |
2 |
8 |
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3 |
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1 |
G |
8 |
6 |
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1 |
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3 |
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9 |
H |
3 |
4 |
7 |
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1 |
6 |
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3 |
6 |
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4 |
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Step 14 Cell I1 can only contain the number 1 since all other numbers are somewhere in its row, column or box.
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5 |
6 |
7 |
8 |
9 |
A |
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1 |
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3 |
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69 |
8 |
5 |
B |
9 |
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1 |
3 |
4 |
C |
5 |
3 |
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1 |
69 |
2 |
7 |
D |
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4 |
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6 |
3 |
E |
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5 |
3 |
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1 |
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9 |
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F |
2 |
8 |
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3 |
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1 |
G |
8 |
6 |
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1 |
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3 |
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9 |
H |
3 |
4 |
7 |
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1 |
6 |
I |
1 |
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3 |
6 |
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4 |
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Step 15 Because of the number 1 just placed, the only position in column 3 for another 1 is cell D3.
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2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
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1 |
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3 |
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69 |
8 |
5 |
B |
9 |
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1 |
3 |
4 |
C |
5 |
3 |
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1 |
69 |
2 |
7 |
D |
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1 |
4 |
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6 |
3 |
E |
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5 |
3 |
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1 |
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9 |
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F |
2 |
8 |
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3 |
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1 |
G |
8 |
6 |
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1 |
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3 |
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9 |
H |
3 |
4 |
7 |
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1 |
6 |
I |
1 |
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3 |
6 |
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4 |
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Step 16 Cell D1 can only contain the number 7 since all other numbers are somewhere in its row, column or box.
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1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
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1 |
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3 |
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69 |
8 |
5 |
B |
9 |
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1 |
3 |
4 |
C |
5 |
3 |
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1 |
69 |
2 |
7 |
D |
7 |
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1 |
4 |
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6 |
3 |
E |
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5 |
3 |
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1 |
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9 |
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F |
2 |
8 |
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3 |
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1 |
G |
8 |
6 |
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1 |
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3 |
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9 |
H |
3 |
4 |
7 |
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1 |
6 |
I |
1 |
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3 |
6 |
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4 |
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Step 17 Because of the number 7 just placed, the only position in column 2 for another 7 is cell B2.
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2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
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1 |
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3 |
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69 |
8 |
5 |
B |
9 |
7 |
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1 |
3 |
4 |
C |
5 |
3 |
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1 |
69 |
2 |
7 |
D |
7 |
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1 |
4 |
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6 |
3 |
E |
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5 |
3 |
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1 |
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9 |
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F |
2 |
8 |
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3 |
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1 |
G |
8 |
6 |
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1 |
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3 |
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9 |
H |
3 |
4 |
7 |
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1 |
6 |
I |
1 |
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3 |
6 |
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4 |
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Step 18 The number 2 is missing from column 2 and its only possible position is cell I2.
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1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
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1 |
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3 |
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69 |
8 |
5 |
B |
9 |
7 |
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1 |
3 |
4 |
C |
5 |
3 |
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1 |
69 |
2 |
7 |
D |
7 |
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1 |
4 |
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6 |
3 |
E |
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5 |
3 |
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1 |
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9 |
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F |
2 |
8 |
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3 |
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1 |
G |
8 |
6 |
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1 |
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3 |
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9 |
H |
3 |
4 |
7 |
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1 |
6 |
I |
1 |
2 |
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3 |
6 |
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4 |
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Step 19 D2 is the last empty cell in column 2 and the missing number is 9.
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2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
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1 |
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3 |
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69 |
8 |
5 |
B |
9 |
7 |
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1 |
3 |
4 |
C |
5 |
3 |
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1 |
69 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
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6 |
3 |
E |
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5 |
3 |
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1 |
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9 |
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F |
2 |
8 |
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3 |
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1 |
G |
8 |
6 |
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1 |
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3 |
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9 |
H |
3 |
4 |
7 |
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1 |
6 |
I |
1 |
2 |
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3 |
6 |
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4 |
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Step 20 Because of the number 9 just placed, the only position in column 3 for another 9 is cell I3.
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1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
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1 |
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3 |
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69 |
8 |
5 |
B |
9 |
7 |
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1 |
3 |
4 |
C |
5 |
3 |
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1 |
69 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
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6 |
3 |
E |
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5 |
3 |
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1 |
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9 |
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F |
2 |
8 |
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3 |
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1 |
G |
8 |
6 |
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1 |
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3 |
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9 |
H |
3 |
4 |
7 |
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1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
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4 |
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Step 21 G3 is the last empty cell in box G1-I3 and the missing number is 5.
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1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
|
1 |
|
|
3 |
|
69 |
8 |
5 |
B |
9 |
7 |
|
|
|
|
1 |
3 |
4 |
C |
5 |
3 |
|
|
|
1 |
69 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
|
|
|
6 |
3 |
E |
|
5 |
3 |
|
1 |
|
|
9 |
|
F |
2 |
8 |
|
|
|
3 |
|
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1 |
G |
8 |
6 |
5 |
1 |
|
|
3 |
|
9 |
H |
3 |
4 |
7 |
|
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1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
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|
4 |
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|
Step 22 The number 5 is missing from column 8 and its only possible position is cell F8.
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1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
|
1 |
|
|
3 |
|
69 |
8 |
5 |
B |
9 |
7 |
|
|
|
|
1 |
3 |
4 |
C |
5 |
3 |
|
|
|
1 |
69 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
|
|
|
6 |
3 |
E |
|
5 |
3 |
|
1 |
|
|
9 |
|
F |
2 |
8 |
|
|
|
3 |
|
5 |
1 |
G |
8 |
6 |
5 |
1 |
|
|
3 |
|
9 |
H |
3 |
4 |
7 |
|
|
|
|
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
|
|
4 |
|
|
Step 23 G8 is the last empty cell in column 8 and the missing number is 7.
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1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
|
1 |
|
|
3 |
|
69 |
8 |
5 |
B |
9 |
7 |
|
|
|
|
1 |
3 |
4 |
C |
5 |
3 |
|
|
|
1 |
69 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
|
|
|
6 |
3 |
E |
|
5 |
3 |
|
1 |
|
|
9 |
|
F |
2 |
8 |
|
|
|
3 |
|
5 |
1 |
G |
8 |
6 |
5 |
1 |
|
|
3 |
7 |
9 |
H |
3 |
4 |
7 |
|
|
|
|
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
|
|
4 |
|
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Step 24 Because of the number 7 just placed, the only position in row I for another 7 is cell I6.
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
|
1 |
|
|
3 |
|
69 |
8 |
5 |
B |
9 |
7 |
|
|
|
|
1 |
3 |
4 |
C |
5 |
3 |
|
|
|
1 |
69 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
|
|
|
6 |
3 |
E |
|
5 |
3 |
|
1 |
|
|
9 |
|
F |
2 |
8 |
|
|
|
3 |
|
5 |
1 |
G |
8 |
6 |
5 |
1 |
|
|
3 |
7 |
9 |
H |
3 |
4 |
7 |
|
|
|
|
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
7 |
|
4 |
|
|
Step 25 The number 7 does not yet appear in row A. Due to other 7s on the grid, the only place it can go is cell A4.
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
|
1 |
|
7 |
3 |
|
69 |
8 |
5 |
B |
9 |
7 |
|
|
|
|
1 |
3 |
4 |
C |
5 |
3 |
|
|
|
1 |
69 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
|
|
|
6 |
3 |
E |
|
5 |
3 |
|
1 |
|
|
9 |
|
F |
2 |
8 |
|
|
|
3 |
|
5 |
1 |
G |
8 |
6 |
5 |
1 |
|
|
3 |
7 |
9 |
H |
3 |
4 |
7 |
|
|
|
|
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
7 |
|
4 |
|
|
Step 26 Because of the number 7 just placed, the only position in column 5 for another 7 is cell F5.
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
|
1 |
|
7 |
3 |
|
69 |
8 |
5 |
B |
9 |
7 |
|
|
|
|
1 |
3 |
4 |
C |
5 |
3 |
|
|
|
1 |
69 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
|
|
|
6 |
3 |
E |
|
5 |
3 |
|
1 |
|
|
9 |
|
F |
2 |
8 |
|
|
7 |
3 |
|
5 |
1 |
G |
8 |
6 |
5 |
1 |
|
|
3 |
7 |
9 |
H |
3 |
4 |
7 |
|
|
|
|
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
7 |
|
4 |
|
|
Step 27 Because of the number 7 just placed, the only position in row E for another 7 is cell E7.
|
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1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
|
1 |
|
7 |
3 |
|
69 |
8 |
5 |
B |
9 |
7 |
|
|
|
|
1 |
3 |
4 |
C |
5 |
3 |
|
|
|
1 |
69 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
|
|
|
6 |
3 |
E |
|
5 |
3 |
|
1 |
|
7 |
9 |
|
F |
2 |
8 |
|
|
7 |
3 |
|
5 |
1 |
G |
8 |
6 |
5 |
1 |
|
|
3 |
7 |
9 |
H |
3 |
4 |
7 |
|
|
|
|
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
7 |
|
4 |
|
|
Step 28 The number 9 does not yet appear in row F. Due to other 9s on the grid, the only place it can go is cell F4.
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
|
1 |
|
7 |
3 |
|
69 |
8 |
5 |
B |
9 |
7 |
|
|
|
|
1 |
3 |
4 |
C |
5 |
3 |
|
|
|
1 |
69 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
|
|
|
6 |
3 |
E |
|
5 |
3 |
|
1 |
|
7 |
9 |
|
F |
2 |
8 |
|
9 |
7 |
3 |
|
5 |
1 |
G |
8 |
6 |
5 |
1 |
|
|
3 |
7 |
9 |
H |
3 |
4 |
7 |
|
|
|
|
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
7 |
|
4 |
|
|
Step 29 The number 4 does not yet appear in column 7. Due to other 4s on the grid, the only place it can go is cell F7.
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
|
1 |
|
7 |
3 |
|
69 |
8 |
5 |
B |
9 |
7 |
|
|
|
|
1 |
3 |
4 |
C |
5 |
3 |
|
|
|
1 |
69 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
|
|
|
6 |
3 |
E |
|
5 |
3 |
|
1 |
|
7 |
9 |
|
F |
2 |
8 |
|
9 |
7 |
3 |
4 |
5 |
1 |
G |
8 |
6 |
5 |
1 |
|
|
3 |
7 |
9 |
H |
3 |
4 |
7 |
|
|
|
|
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
7 |
|
4 |
|
|
Step 30 Because of the number 4 just placed, the only position in row E for another 4 is cell E1.
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
|
1 |
|
7 |
3 |
|
69 |
8 |
5 |
B |
9 |
7 |
|
|
|
|
1 |
3 |
4 |
C |
5 |
3 |
|
|
|
1 |
69 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
|
|
|
6 |
3 |
E |
4 |
5 |
3 |
|
1 |
|
7 |
9 |
|
F |
2 |
8 |
|
9 |
7 |
3 |
4 |
5 |
1 |
G |
8 |
6 |
5 |
1 |
|
|
3 |
7 |
9 |
H |
3 |
4 |
7 |
|
|
|
|
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
7 |
|
4 |
|
|
Step 31 F3 is the last empty cell in box D1-F3 and the missing number is 6.
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
|
1 |
|
7 |
3 |
|
69 |
8 |
5 |
B |
9 |
7 |
|
|
|
|
1 |
3 |
4 |
C |
5 |
3 |
|
|
|
1 |
69 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
|
|
|
6 |
3 |
E |
4 |
5 |
3 |
|
1 |
|
7 |
9 |
|
F |
2 |
8 |
6 |
9 |
7 |
3 |
4 |
5 |
1 |
G |
8 |
6 |
5 |
1 |
|
|
3 |
7 |
9 |
H |
3 |
4 |
7 |
|
|
|
|
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
7 |
|
4 |
|
|
Step 32 A1 is the last empty cell in column 1 and the missing number is 6.
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
6 |
1 |
|
7 |
3 |
|
9 |
8 |
5 |
B |
9 |
7 |
|
|
|
|
1 |
3 |
4 |
C |
5 |
3 |
|
|
|
1 |
69 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
|
|
|
6 |
3 |
E |
4 |
5 |
3 |
|
1 |
|
7 |
9 |
|
F |
2 |
8 |
6 |
9 |
7 |
3 |
4 |
5 |
1 |
G |
8 |
6 |
5 |
1 |
|
|
3 |
7 |
9 |
H |
3 |
4 |
7 |
|
|
|
|
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
7 |
|
4 |
|
|
Step 33 The number 6 does not yet appear in column 7. Due to other 6s on the grid, the only place it can go is cell C7.
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
6 |
1 |
|
7 |
3 |
|
9 |
8 |
5 |
B |
9 |
7 |
|
|
|
|
1 |
3 |
4 |
C |
5 |
3 |
|
|
|
1 |
6 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
|
|
|
6 |
3 |
E |
4 |
5 |
3 |
|
1 |
|
7 |
9 |
|
F |
2 |
8 |
6 |
9 |
7 |
3 |
4 |
5 |
1 |
G |
8 |
6 |
5 |
1 |
|
|
3 |
7 |
9 |
H |
3 |
4 |
7 |
|
|
|
|
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
7 |
|
4 |
|
|
Step 34 A7 is the last empty cell in box A7-C9 and the missing number is 9.
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
6 |
1 |
|
7 |
3 |
|
9 |
8 |
5 |
B |
9 |
7 |
|
|
|
|
1 |
3 |
4 |
C |
5 |
3 |
|
|
|
1 |
6 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
|
|
|
6 |
3 |
E |
4 |
5 |
3 |
|
1 |
|
7 |
9 |
|
F |
2 |
8 |
6 |
9 |
7 |
3 |
4 |
5 |
1 |
G |
8 |
6 |
5 |
1 |
|
|
3 |
7 |
9 |
H |
3 |
4 |
7 |
|
|
|
|
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
7 |
|
4 |
|
|
Step 35 Because of the number 9 just placed, the only position in row C for another 9 is cell C5.
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
6 |
1 |
|
7 |
3 |
|
9 |
8 |
5 |
B |
9 |
7 |
|
|
|
|
1 |
3 |
4 |
C |
5 |
3 |
|
|
9 |
1 |
6 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
|
|
|
6 |
3 |
E |
4 |
5 |
3 |
|
1 |
|
7 |
9 |
|
F |
2 |
8 |
6 |
9 |
7 |
3 |
4 |
5 |
1 |
G |
8 |
6 |
5 |
1 |
|
|
3 |
7 |
9 |
H |
3 |
4 |
7 |
|
|
|
|
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
7 |
|
4 |
|
|
Step 36 Because of the number 9 just placed, the only position in column 6 for another 9 is cell H6.
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
6 |
1 |
|
7 |
3 |
|
9 |
8 |
5 |
B |
9 |
7 |
|
|
|
|
1 |
3 |
4 |
C |
5 |
3 |
|
|
9 |
1 |
6 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
|
|
|
6 |
3 |
E |
4 |
5 |
3 |
|
1 |
|
7 |
9 |
|
F |
2 |
8 |
6 |
9 |
7 |
3 |
4 |
5 |
1 |
G |
8 |
6 |
5 |
1 |
|
|
3 |
7 |
9 |
H |
3 |
4 |
7 |
|
|
9 |
|
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
7 |
|
4 |
|
|
Step 37 The number 4 is missing from row C and its only possible position is cell C3.
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
6 |
1 |
|
7 |
3 |
|
9 |
8 |
5 |
B |
9 |
7 |
|
|
|
|
1 |
3 |
4 |
C |
5 |
3 |
4 |
|
9 |
1 |
6 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
|
|
|
6 |
3 |
E |
4 |
5 |
3 |
|
1 |
|
7 |
9 |
|
F |
2 |
8 |
6 |
9 |
7 |
3 |
4 |
5 |
1 |
G |
8 |
6 |
5 |
1 |
|
|
3 |
7 |
9 |
H |
3 |
4 |
7 |
|
|
9 |
|
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
7 |
|
4 |
|
|
Step 38 Because of the number 4 just placed, the only position in row A for another 4 is cell A6.
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
6 |
1 |
|
7 |
3 |
4 |
9 |
8 |
5 |
B |
9 |
7 |
|
|
|
|
1 |
3 |
4 |
C |
5 |
3 |
4 |
|
9 |
1 |
6 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
|
|
|
6 |
3 |
E |
4 |
5 |
3 |
|
1 |
|
7 |
9 |
|
F |
2 |
8 |
6 |
9 |
7 |
3 |
4 |
5 |
1 |
G |
8 |
6 |
5 |
1 |
|
|
3 |
7 |
9 |
H |
3 |
4 |
7 |
|
|
9 |
|
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
7 |
|
4 |
|
|
Step 39 Because of the number 4 just placed, the only position in column 5 for another 4 is cell G5.
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
6 |
1 |
|
7 |
3 |
4 |
9 |
8 |
5 |
B |
9 |
7 |
|
|
|
|
1 |
3 |
4 |
C |
5 |
3 |
4 |
|
9 |
1 |
6 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
|
|
|
6 |
3 |
E |
4 |
5 |
3 |
|
1 |
|
7 |
9 |
|
F |
2 |
8 |
6 |
9 |
7 |
3 |
4 |
5 |
1 |
G |
8 |
6 |
5 |
1 |
4 |
|
3 |
7 |
9 |
H |
3 |
4 |
7 |
|
|
9 |
|
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
7 |
|
4 |
|
|
Step 40 A3 is the last empty cell in row A and the missing number is 2.
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
6 |
1 |
2 |
7 |
3 |
4 |
9 |
8 |
5 |
B |
9 |
7 |
|
|
|
|
1 |
3 |
4 |
C |
5 |
3 |
4 |
|
9 |
1 |
6 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
|
|
|
6 |
3 |
E |
4 |
5 |
3 |
|
1 |
|
7 |
9 |
|
F |
2 |
8 |
6 |
9 |
7 |
3 |
4 |
5 |
1 |
G |
8 |
6 |
5 |
1 |
4 |
|
3 |
7 |
9 |
H |
3 |
4 |
7 |
|
|
9 |
|
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
7 |
|
4 |
|
|
Step 41 B3 is the last empty cell in box A1-C3 and the missing number is 8.
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
6 |
1 |
2 |
7 |
3 |
4 |
9 |
8 |
5 |
B |
9 |
7 |
8 |
|
|
|
1 |
3 |
4 |
C |
5 |
3 |
4 |
|
9 |
1 |
6 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
|
|
|
6 |
3 |
E |
4 |
5 |
3 |
|
1 |
|
7 |
9 |
|
F |
2 |
8 |
6 |
9 |
7 |
3 |
4 |
5 |
1 |
G |
8 |
6 |
5 |
1 |
4 |
|
3 |
7 |
9 |
H |
3 |
4 |
7 |
|
|
9 |
|
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
7 |
|
4 |
|
|
Step 42 C4 is the last empty cell in row C and the missing number is 8.
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
6 |
1 |
2 |
7 |
3 |
4 |
9 |
8 |
5 |
B |
9 |
7 |
8 |
|
|
|
1 |
3 |
4 |
C |
5 |
3 |
4 |
8 |
9 |
1 |
6 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
|
|
|
6 |
3 |
E |
4 |
5 |
3 |
|
1 |
|
7 |
9 |
|
F |
2 |
8 |
6 |
9 |
7 |
3 |
4 |
5 |
1 |
G |
8 |
6 |
5 |
1 |
4 |
|
3 |
7 |
9 |
H |
3 |
4 |
7 |
|
|
9 |
|
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
7 |
|
4 |
|
|
Step 43 G6 is the last empty cell in row G and the missing number is 2.
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
6 |
1 |
2 |
7 |
3 |
4 |
9 |
8 |
5 |
B |
9 |
7 |
8 |
|
|
|
1 |
3 |
4 |
C |
5 |
3 |
4 |
8 |
9 |
1 |
6 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
|
|
|
6 |
3 |
E |
4 |
5 |
3 |
|
1 |
|
7 |
9 |
|
F |
2 |
8 |
6 |
9 |
7 |
3 |
4 |
5 |
1 |
G |
8 |
6 |
5 |
1 |
4 |
2 |
3 |
7 |
9 |
H |
3 |
4 |
7 |
|
|
9 |
|
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
7 |
|
4 |
|
|
Step 44 Because of the number 2 just placed, the only position in row H for another 2 is cell H7.
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
6 |
1 |
2 |
7 |
3 |
4 |
9 |
8 |
5 |
B |
9 |
7 |
8 |
|
|
|
1 |
3 |
4 |
C |
5 |
3 |
4 |
8 |
9 |
1 |
6 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
|
|
|
6 |
3 |
E |
4 |
5 |
3 |
|
1 |
|
7 |
9 |
|
F |
2 |
8 |
6 |
9 |
7 |
3 |
4 |
5 |
1 |
G |
8 |
6 |
5 |
1 |
4 |
2 |
3 |
7 |
9 |
H |
3 |
4 |
7 |
|
|
9 |
2 |
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
7 |
|
4 |
|
|
Step 45 Because of the number 2 just placed, the only position in column 9 for another 2 is cell E9.
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
6 |
1 |
2 |
7 |
3 |
4 |
9 |
8 |
5 |
B |
9 |
7 |
8 |
|
|
|
1 |
3 |
4 |
C |
5 |
3 |
4 |
8 |
9 |
1 |
6 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
|
|
|
6 |
3 |
E |
4 |
5 |
3 |
|
1 |
|
7 |
9 |
2 |
F |
2 |
8 |
6 |
9 |
7 |
3 |
4 |
5 |
1 |
G |
8 |
6 |
5 |
1 |
4 |
2 |
3 |
7 |
9 |
H |
3 |
4 |
7 |
|
|
9 |
2 |
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
7 |
|
4 |
|
|
Step 46 Because of the number 2 just placed, the only position in row D for another 2 is cell D5.
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
6 |
1 |
2 |
7 |
3 |
4 |
9 |
8 |
5 |
B |
9 |
7 |
8 |
|
|
|
1 |
3 |
4 |
C |
5 |
3 |
4 |
8 |
9 |
1 |
6 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
2 |
|
|
6 |
3 |
E |
4 |
5 |
3 |
|
1 |
|
7 |
9 |
2 |
F |
2 |
8 |
6 |
9 |
7 |
3 |
4 |
5 |
1 |
G |
8 |
6 |
5 |
1 |
4 |
2 |
3 |
7 |
9 |
H |
3 |
4 |
7 |
|
|
9 |
2 |
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
7 |
|
4 |
|
|
Step 47 Because of the number 2 just placed, the only position in column 4 for another 2 is cell B4.
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
6 |
1 |
2 |
7 |
3 |
4 |
9 |
8 |
5 |
B |
9 |
7 |
8 |
2 |
|
|
1 |
3 |
4 |
C |
5 |
3 |
4 |
8 |
9 |
1 |
6 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
2 |
|
|
6 |
3 |
E |
4 |
5 |
3 |
|
1 |
|
7 |
9 |
2 |
F |
2 |
8 |
6 |
9 |
7 |
3 |
4 |
5 |
1 |
G |
8 |
6 |
5 |
1 |
4 |
2 |
3 |
7 |
9 |
H |
3 |
4 |
7 |
|
|
9 |
2 |
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
7 |
|
4 |
|
|
Step 48 D7 is the last empty cell in box D7-F9 and the missing number is 8.
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
6 |
1 |
2 |
7 |
3 |
4 |
9 |
8 |
5 |
B |
9 |
7 |
8 |
2 |
|
|
1 |
3 |
4 |
C |
5 |
3 |
4 |
8 |
9 |
1 |
6 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
2 |
|
8 |
6 |
3 |
E |
4 |
5 |
3 |
|
1 |
|
7 |
9 |
2 |
F |
2 |
8 |
6 |
9 |
7 |
3 |
4 |
5 |
1 |
G |
8 |
6 |
5 |
1 |
4 |
2 |
3 |
7 |
9 |
H |
3 |
4 |
7 |
|
|
9 |
2 |
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
7 |
|
4 |
|
|
Step 49 Because of the number 8 just placed, the only position in row E for another 8 is cell E6.
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
6 |
1 |
2 |
7 |
3 |
4 |
9 |
8 |
5 |
B |
9 |
7 |
8 |
2 |
|
|
1 |
3 |
4 |
C |
5 |
3 |
4 |
8 |
9 |
1 |
6 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
2 |
|
8 |
6 |
3 |
E |
4 |
5 |
3 |
|
1 |
8 |
7 |
9 |
2 |
F |
2 |
8 |
6 |
9 |
7 |
3 |
4 |
5 |
1 |
G |
8 |
6 |
5 |
1 |
4 |
2 |
3 |
7 |
9 |
H |
3 |
4 |
7 |
|
|
9 |
2 |
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
7 |
|
4 |
|
|
Step 50 Because of the number 8 just placed, the only position in column 5 for another 8 is cell H5.
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
6 |
1 |
2 |
7 |
3 |
4 |
9 |
8 |
5 |
B |
9 |
7 |
8 |
2 |
|
|
1 |
3 |
4 |
C |
5 |
3 |
4 |
8 |
9 |
1 |
6 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
2 |
|
8 |
6 |
3 |
E |
4 |
5 |
3 |
|
1 |
8 |
7 |
9 |
2 |
F |
2 |
8 |
6 |
9 |
7 |
3 |
4 |
5 |
1 |
G |
8 |
6 |
5 |
1 |
4 |
2 |
3 |
7 |
9 |
H |
3 |
4 |
7 |
|
8 |
9 |
2 |
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
7 |
|
4 |
|
|
Step 51 Because of the number 8 just placed, the only position in row I for another 8 is cell I9.
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
6 |
1 |
2 |
7 |
3 |
4 |
9 |
8 |
5 |
B |
9 |
7 |
8 |
2 |
|
|
1 |
3 |
4 |
C |
5 |
3 |
4 |
8 |
9 |
1 |
6 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
2 |
|
8 |
6 |
3 |
E |
4 |
5 |
3 |
|
1 |
8 |
7 |
9 |
2 |
F |
2 |
8 |
6 |
9 |
7 |
3 |
4 |
5 |
1 |
G |
8 |
6 |
5 |
1 |
4 |
2 |
3 |
7 |
9 |
H |
3 |
4 |
7 |
|
8 |
9 |
2 |
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
7 |
|
4 |
8 |
|
Step 52 H4 is the last empty cell in box G4-I6 and the missing number is 5.
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
6 |
1 |
2 |
7 |
3 |
4 |
9 |
8 |
5 |
B |
9 |
7 |
8 |
2 |
|
|
1 |
3 |
4 |
C |
5 |
3 |
4 |
8 |
9 |
1 |
6 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
2 |
|
8 |
6 |
3 |
E |
4 |
5 |
3 |
|
1 |
8 |
7 |
9 |
2 |
F |
2 |
8 |
6 |
9 |
7 |
3 |
4 |
5 |
1 |
G |
8 |
6 |
5 |
1 |
4 |
2 |
3 |
7 |
9 |
H |
3 |
4 |
7 |
5 |
8 |
9 |
2 |
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
7 |
|
4 |
8 |
|
Step 53 I7 is the last empty cell in row I and the missing number is 5.
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
6 |
1 |
2 |
7 |
3 |
4 |
9 |
8 |
5 |
B |
9 |
7 |
8 |
2 |
|
|
1 |
3 |
4 |
C |
5 |
3 |
4 |
8 |
9 |
1 |
6 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
2 |
|
8 |
6 |
3 |
E |
4 |
5 |
3 |
|
1 |
8 |
7 |
9 |
2 |
F |
2 |
8 |
6 |
9 |
7 |
3 |
4 |
5 |
1 |
G |
8 |
6 |
5 |
1 |
4 |
2 |
3 |
7 |
9 |
H |
3 |
4 |
7 |
5 |
8 |
9 |
2 |
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
7 |
5 |
4 |
8 |
|
Step 54 D6 is the last empty cell in row D and the missing number is 5.
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
6 |
1 |
2 |
7 |
3 |
4 |
9 |
8 |
5 |
B |
9 |
7 |
8 |
2 |
|
|
1 |
3 |
4 |
C |
5 |
3 |
4 |
8 |
9 |
1 |
6 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
2 |
5 |
8 |
6 |
3 |
E |
4 |
5 |
3 |
|
1 |
8 |
7 |
9 |
2 |
F |
2 |
8 |
6 |
9 |
7 |
3 |
4 |
5 |
1 |
G |
8 |
6 |
5 |
1 |
4 |
2 |
3 |
7 |
9 |
H |
3 |
4 |
7 |
5 |
8 |
9 |
2 |
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
7 |
5 |
4 |
8 |
|
Step 55 B5 is the last empty cell in column 5 and the missing number is 5.
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
6 |
1 |
2 |
7 |
3 |
4 |
9 |
8 |
5 |
B |
9 |
7 |
8 |
2 |
5 |
|
1 |
3 |
4 |
C |
5 |
3 |
4 |
8 |
9 |
1 |
6 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
2 |
5 |
8 |
6 |
3 |
E |
4 |
5 |
3 |
|
1 |
8 |
7 |
9 |
2 |
F |
2 |
8 |
6 |
9 |
7 |
3 |
4 |
5 |
1 |
G |
8 |
6 |
5 |
1 |
4 |
2 |
3 |
7 |
9 |
H |
3 |
4 |
7 |
5 |
8 |
9 |
2 |
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
7 |
5 |
4 |
8 |
|
Step 56 B6 is the last empty cell in box A4-C6 and the missing number is 6.
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
6 |
1 |
2 |
7 |
3 |
4 |
9 |
8 |
5 |
B |
9 |
7 |
8 |
2 |
5 |
6 |
1 |
3 |
4 |
C |
5 |
3 |
4 |
8 |
9 |
1 |
6 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
2 |
5 |
8 |
6 |
3 |
E |
4 |
5 |
3 |
|
1 |
8 |
7 |
9 |
2 |
F |
2 |
8 |
6 |
9 |
7 |
3 |
4 |
5 |
1 |
G |
8 |
6 |
5 |
1 |
4 |
2 |
3 |
7 |
9 |
H |
3 |
4 |
7 |
5 |
8 |
9 |
2 |
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
7 |
5 |
4 |
8 |
|
Step 57 E4 is the last empty cell in column 4 and the missing number is 6.
Congratulations - the puzzle is solved!
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
6 |
1 |
2 |
7 |
3 |
4 |
9 |
8 |
5 |
B |
9 |
7 |
8 |
2 |
5 |
6 |
1 |
3 |
4 |
C |
5 |
3 |
4 |
8 |
9 |
1 |
6 |
2 |
7 |
D |
7 |
9 |
1 |
4 |
2 |
5 |
8 |
6 |
3 |
E |
4 |
5 |
3 |
6 |
1 |
8 |
7 |
9 |
2 |
F |
2 |
8 |
6 |
9 |
7 |
3 |
4 |
5 |
1 |
G |
8 |
6 |
5 |
1 |
4 |
2 |
3 |
7 |
9 |
H |
3 |
4 |
7 |
5 |
8 |
9 |
2 |
1 |
6 |
I |
1 |
2 |
9 |
3 |
6 |
7 |
5 |
4 |
8 |
|
©