Solution for Evil Sudoku #2469378142544
4
1
6
5
3
8
7
9
2
5
3
9
1
2
7
8
4
6
8
7
2
4
9
6
5
3
1
8
6
3
9
7
1
2
5
4
4
9
2
6
5
8
3
7
1
1
5
7
3
2
4
6
8
9
6
4
7
3
8
9
1
2
5
2
8
5
7
1
4
9
6
3
9
1
3
2
6
5
7
4
8
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 → 3 (Naked Single)
- Row 9 / Column 5 → 6 (Naked Single)
- Row 5 / Column 5 → 5 (Full House)
- Row 3 / Column 4 → 8 (Hidden Single)
- Row 4 / Column 6 → 2 (Hidden Single)
- Row 2 / Column 9 → 6 (Hidden Single)
- Row 7 / Column 6 → 5 (Hidden Single)
- Row 9 / Column 2 → 2 (Hidden Single)
- Row 8 / Column 1 → 3 (Hidden Single)
- Row 9 / Column 1 → 1 (Hidden Single)
- Row 3 / Column 1 → 7 (Naked Single)
- Row 8 / Column 2 → 8 (Hidden Single)
- Row 1 / Column 8 → 7 (Hidden Single)
- Row 7 / Column 3 → 7 (Hidden Single)
- Row 9 / Column 7 → 7 (Hidden Single)
- Naked Pair: 4,9 in r29c8 => r46c8<>4, r6c8<>9
- X-Wing: 9 c48 r29 => r2c7<>9
- X-Wing: 9 c17 r57 => r5c39,r7c9<>9
- Hidden Rectangle: 1/2 in r1c39,r3c39 => r1c9<>1
- XY-Chain: 9 9- r1c6 -1- r1c2 -6- r7c2 -4- r8c3 -9- r8c6 -4- r9c4 -9- r9c8 -4- r2c8 -9 => r1c9,r2c4<>9
- Row 1 / Column 9 → 2 (Naked Single)
- Row 2 / Column 4 → 1 (Naked Single)
- Row 1 / Column 6 → 9 (Full House)
- Row 2 / Column 7 → 4 (Naked Single)
- Row 2 / Column 8 → 9 (Full House)
- Row 8 / Column 6 → 4 (Naked Single)
- Row 8 / Column 3 → 9 (Full House)
- Row 9 / Column 4 → 9 (Full House)
- Row 9 / Column 8 → 4 (Full House)
- Row 7 / Column 1 → 6 (Naked Single)
- Row 7 / Column 2 → 4 (Full House)
- Row 7 / Column 9 → 3 (Naked Single)
- Row 7 / Column 7 → 9 (Full House)
- Row 4 / Column 1 → 8 (Naked Single)
- Row 5 / Column 1 → 9 (Full House)
- Row 3 / Column 9 → 1 (Naked Single)
- Row 4 / Column 8 → 5 (Naked Single)
- Row 3 / Column 3 → 2 (Naked Single)
- Row 5 / Column 9 → 4 (Naked Single)
- Row 6 / Column 9 → 9 (Full House)
- Row 3 / Column 8 → 3 (Naked Single)
- Row 3 / Column 7 → 5 (Full House)
- Row 6 / Column 8 → 8 (Full House)
- Row 4 / Column 7 → 1 (Naked Single)
- Row 5 / Column 7 → 3 (Full House)
- Row 6 / Column 6 → 1 (Naked Single)
- Row 5 / Column 6 → 8 (Full House)
- Row 4 / Column 2 → 6 (Naked Single)
- Row 4 / Column 4 → 4 (Full House)
- Row 5 / Column 4 → 6 (Naked Single)
- Row 5 / Column 3 → 1 (Full House)
- Row 6 / Column 4 → 3 (Full House)
- Row 6 / Column 2 → 5 (Naked Single)
- Row 6 / Column 3 → 4 (Full House)
- Row 1 / Column 2 → 1 (Full House)
- Row 1 / Column 3 → 6 (Full House)
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