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

This Sudoku Puzzle has 44 steps and it is solved using Locked Pair, Locked Candidates Type 1 (Pointing), Naked Pair, Hidden Single, Naked Triple, Full House, Naked Single techniques.

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

Solution Steps:

  1. Locked Pair: 5,6 in r7c46 => r7c12,r9c5<>5, r7c12,r8c5<>6
  2. Locked Candidates Type 1 (Pointing): 2 in b9 => r9c12<>2
  3. Naked Pair: 2,8 in r37c2 => r125c2<>8, r2c2<>2
  4. Row 1 / Column 5 → 8 (Hidden Single)
  5. Row 5 / Column 3 → 8 (Hidden Single)
  6. Naked Triple: 4,5,9 in r129c2 => r5c2<>5, r8c2<>4
  7. Row 5 / Column 4 → 5 (Hidden Single)
  8. Row 4 / Column 5 → 6 (Full House)
  9. Row 7 / Column 4 → 6 (Full House)
  10. Row 2 / Column 5 → 5 (Naked Single)
  11. Row 1 / Column 6 → 6 (Full House)
  12. Row 7 / Column 6 → 5 (Full House)
  13. Row 1 / Column 2 → 5 (Hidden Single)
  14. Row 9 / Column 2 → 4 (Naked Single)
  15. Row 2 / Column 2 → 9 (Naked Single)
  16. Row 8 / Column 3 → 3 (Naked Single)
  17. Row 8 / Column 2 → 6 (Naked Single)
  18. Row 5 / Column 2 → 3 (Naked Single)
  19. Row 5 / Column 8 → 6 (Full House)
  20. Row 8 / Column 1 → 1 (Naked Single)
  21. Row 8 / Column 5 → 9 (Naked Single)
  22. Row 8 / Column 8 → 4 (Full House)
  23. Row 9 / Column 5 → 1 (Full House)
  24. Row 9 / Column 1 → 5 (Naked Single)
  25. Row 1 / Column 8 → 9 (Naked Single)
  26. Row 1 / Column 7 → 4 (Full House)
  27. Row 4 / Column 1 → 2 (Naked Single)
  28. Row 9 / Column 8 → 2 (Naked Single)
  29. Row 2 / Column 8 → 3 (Full House)
  30. Row 9 / Column 7 → 9 (Full House)
  31. Row 4 / Column 3 → 5 (Naked Single)
  32. Row 4 / Column 9 → 3 (Full House)
  33. Row 6 / Column 3 → 4 (Naked Single)
  34. Row 2 / Column 3 → 2 (Full House)
  35. Row 6 / Column 1 → 6 (Full House)
  36. Row 7 / Column 1 → 8 (Naked Single)
  37. Row 2 / Column 1 → 4 (Full House)
  38. Row 3 / Column 2 → 8 (Full House)
  39. Row 7 / Column 2 → 2 (Full House)
  40. Row 3 / Column 9 → 2 (Full House)
  41. Row 6 / Column 7 → 2 (Naked Single)
  42. Row 2 / Column 7 → 6 (Full House)
  43. Row 2 / Column 9 → 8 (Full House)
  44. Row 6 / Column 9 → 9 (Full House)
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