2
5
3
8
9
4
1
7
6
7
8
4
3
2
1
9
4
8
3
4
6
7
5
4
2
3
7
9
This Sudoku Puzzle has 51 steps and it is solved using Naked Single, Full House, Hidden Single, Naked Triple, Skyscraper, Bivalue Universal Grave + 1, Give Up techniques.
Try To Solve This PuzzleSolution Steps:
- Row 4 / Column 7 → 5 (Naked Single)
- Row 3 / Column 8 → 5 (Naked Single)
- Row 3 / Column 9 → 9 (Naked Single)
- Row 3 / Column 6 → 3 (Naked Single)
- Row 3 / Column 5 → 8 (Naked Single)
- Row 3 / Column 4 → 4 (Full House)
- Row 4 / Column 6 → 6 (Naked Single)
- Row 9 / Column 6 → 1 (Naked Single)
- Row 2 / Column 6 → 5 (Naked Single)
- Row 7 / Column 6 → 9 (Full House)
- Row 9 / Column 7 → 6 (Naked Single)
- Row 8 / Column 7 → 1 (Naked Single)
- Row 5 / Column 7 → 9 (Full House)
- Row 9 / Column 5 → 7 (Naked Single)
- Row 5 / Column 1 → 6 (Naked Single)
- Row 7 / Column 1 → 3 (Naked Single)
- Row 4 / Column 1 → 4 (Naked Single)
- Row 6 / Column 1 → 9 (Full House)
- Row 1 / Column 4 → 9 (Hidden Single)
- Row 6 / Column 5 → 3 (Hidden Single)
- Row 6 / Column 2 → 2 (Naked Single)
- Row 5 / Column 2 → 8 (Naked Single)
- Row 4 / Column 2 → 3 (Naked Single)
- Row 9 / Column 2 → 4 (Naked Single)
- Row 8 / Column 2 → 6 (Naked Single)
- Row 7 / Column 2 → 1 (Full House)
- Row 8 / Column 5 → 5 (Naked Single)
- Row 8 / Column 4 → 8 (Naked Single)
- Row 7 / Column 4 → 6 (Full House)
- Row 8 / Column 3 → 9 (Naked Single)
- Row 8 / Column 8 → 3 (Naked Single)
- Row 8 / Column 9 → 4 (Full House)
- Row 7 / Column 9 → 5 (Hidden Single)
- Naked Triple: 1,6,7 in r126c9 => r4c9<>7
- Skyscraper: 1 in r1c5,r6c4 (connected by r16c9) => r2c4,r5c5<>1
- Row 2 / Column 4 → 2 (Naked Single)
- Row 5 / Column 5 → 2 (Naked Single)
- Row 4 / Column 4 → 7 (Naked Single)
- Bivalue Universal Grave + 1 => r2c9<>6, r2c9<>7
- Row 2 / Column 9 → 1 (Naked Single)
- Row 1 / Column 9 → 6 (Naked Single)
- Row 2 / Column 8 → 7 (Full House)
- Row 2 / Column 5 → 6 (Full House)
- Row 1 / Column 5 → 1 (Full House)
- Row 6 / Column 9 → 7 (Naked Single)
- Row 5 / Column 8 → 1 (Naked Single)
- Row 6 / Column 3 → 5 (Naked Single)
- Row 5 / Column 3 → 7 (Full House)
- Row 5 / Column 4 → 5 (Full House)
- Row 6 / Column 4 → 1 (Full House)
- Give Up: Don't know how to proceed!
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