Solution for Evil Sudoku #3218236794544
9
7
1
5
2
6
3
8
4
5
2
8
7
4
3
6
9
1
6
3
4
9
8
1
5
2
7
6
1
2
8
3
7
4
5
9
9
8
4
1
5
6
2
3
7
7
5
3
2
4
9
1
6
8
1
9
3
2
6
8
7
4
5
4
6
5
3
7
9
8
1
2
8
7
2
4
1
5
3
9
6
This Sudoku Puzzle has 56 steps and it is solved using Naked Single, Full House, Hidden Single, Naked Pair, undefined, Hidden Rectangle techniques.
Try To Solve This PuzzleSolution Steps:
- Row 1 / Column 5 → 2 (Naked Single)
- Row 9 / Column 5 → 1 (Naked Single)
- Row 5 / Column 5 → 5 (Full House)
- Row 3 / Column 4 → 6 (Hidden Single)
- Row 4 / Column 6 → 4 (Hidden Single)
- Row 2 / Column 9 → 1 (Hidden Single)
- Row 7 / Column 6 → 5 (Hidden Single)
- Row 9 / Column 2 → 4 (Hidden Single)
- Row 8 / Column 1 → 2 (Hidden Single)
- Row 9 / Column 1 → 7 (Hidden Single)
- Row 3 / Column 1 → 3 (Naked Single)
- Row 8 / Column 2 → 6 (Hidden Single)
- Row 1 / Column 8 → 3 (Hidden Single)
- Row 7 / Column 3 → 3 (Hidden Single)
- Row 9 / Column 7 → 3 (Hidden Single)
- Naked Pair: 8,9 in r29c8 => r46c8<>9, r6c8<>8
- X-Wing: 8 c48 r29 => r2c7<>8
- X-Wing: 8 c17 r57 => r5c39,r7c9<>8
- Hidden Rectangle: 4/7 in r1c39,r3c39 => r1c9<>7
- XY-Chain: 8 8- r1c6 -7- r1c2 -1- r7c2 -9- r8c3 -8- r8c6 -9- r9c4 -8- r9c8 -9- r2c8 -8 => r1c9,r2c4<>8
- Row 1 / Column 9 → 4 (Naked Single)
- Row 2 / Column 4 → 7 (Naked Single)
- Row 1 / Column 6 → 8 (Full House)
- Row 2 / Column 7 → 9 (Naked Single)
- Row 2 / Column 8 → 8 (Full House)
- Row 8 / Column 6 → 9 (Naked Single)
- Row 8 / Column 3 → 8 (Full House)
- Row 9 / Column 4 → 8 (Full House)
- Row 9 / Column 8 → 9 (Full House)
- Row 7 / Column 1 → 1 (Naked Single)
- Row 7 / Column 2 → 9 (Full House)
- Row 7 / Column 9 → 2 (Naked Single)
- Row 7 / Column 7 → 8 (Full House)
- Row 4 / Column 1 → 6 (Naked Single)
- Row 5 / Column 1 → 8 (Full House)
- Row 3 / Column 9 → 7 (Naked Single)
- Row 4 / Column 8 → 5 (Naked Single)
- Row 3 / Column 3 → 4 (Naked Single)
- Row 5 / Column 9 → 9 (Naked Single)
- Row 6 / Column 9 → 8 (Full House)
- Row 3 / Column 8 → 2 (Naked Single)
- Row 3 / Column 7 → 5 (Full House)
- Row 6 / Column 8 → 6 (Full House)
- Row 4 / Column 7 → 7 (Naked Single)
- Row 5 / Column 7 → 2 (Full House)
- Row 6 / Column 6 → 7 (Naked Single)
- Row 5 / Column 6 → 6 (Full House)
- Row 4 / Column 2 → 1 (Naked Single)
- Row 4 / Column 4 → 9 (Full House)
- Row 5 / Column 4 → 1 (Naked Single)
- Row 5 / Column 3 → 7 (Full House)
- Row 6 / Column 4 → 2 (Full House)
- Row 6 / Column 2 → 5 (Naked Single)
- Row 6 / Column 3 → 9 (Full House)
- Row 1 / Column 2 → 7 (Full House)
- Row 1 / Column 3 → 1 (Full House)
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