1
2
5
3
9
5
7
9
2
3
9
6
1
4
7
5
5
1
6
3
8
4
5
1
5
2
4
6
8
3
3
6
2
5
3
2
8
1
4

This Sudoku Puzzle has 32 steps and it is solved using Naked Single, Full House, Hidden Single, Locked Candidates Type 1 (Pointing), Remote Pair, undefined, Give Up techniques.

Naked Single Explanation
Hidden Single Explanation
Locked Candidates Explanation
Full House Explanation
Try To Solve This Puzzle

Solution Steps:

  1. Row 2 / Column 7 → 8 (Naked Single)
  2. Row 3 / Column 7 → 2 (Full House)
  3. Row 8 / Column 8 → 5 (Naked Single)
  4. Row 2 / Column 5 → 3 (Hidden Single)
  5. Row 5 / Column 5 → 5 (Hidden Single)
  6. Row 7 / Column 7 → 6 (Hidden Single)
  7. Row 8 / Column 5 → 1 (Hidden Single)
  8. Row 3 / Column 5 → 6 (Hidden Single)
  9. Row 5 / Column 9 → 1 (Hidden Single)
  10. Row 2 / Column 3 → 6 (Hidden Single)
  11. Row 2 / Column 2 → 7 (Full House)
  12. Row 5 / Column 2 → 2 (Naked Single)
  13. Row 5 / Column 8 → 8 (Naked Single)
  14. Row 4 / Column 1 → 8 (Hidden Single)
  15. Row 1 / Column 1 → 4 (Naked Single)
  16. Row 1 / Column 5 → 8 (Full House)
  17. Row 3 / Column 3 → 8 (Full House)
  18. Row 5 / Column 3 → 4 (Hidden Single)
  19. Row 7 / Column 6 → 8 (Hidden Single)
  20. Locked Candidates Type 1 (Pointing): 9 in b8 => r46c5<>9
  21. Remote Pair: 7/9 r6c1 -9- r5c1 -7- r5c7 -9- r8c7 -7- r9c9 -9- r9c5 => r6c5<>7
  22. Locked Candidates Type 1 (Pointing): 7 in b5 => r4c9<>7
  23. XY-Chain: 7 7- r5c7 -9- r8c7 -7- r9c9 -9- r9c5 -7- r4c5 -2- r6c5 -4- r6c6 -9- r6c1 -7 => r5c1,r6c9<>7
  24. Row 5 / Column 1 → 9 (Naked Single)
  25. Row 5 / Column 7 → 7 (Full House)
  26. Row 6 / Column 1 → 7 (Full House)
  27. Row 8 / Column 7 → 9 (Full House)
  28. Row 8 / Column 3 → 7 (Full House)
  29. Row 9 / Column 9 → 7 (Full House)
  30. Row 7 / Column 3 → 9 (Full House)
  31. Row 9 / Column 5 → 9 (Full House)
  32. Give Up: Don't know how to proceed!
Show More...