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

This Sudoku Puzzle has 38 steps and it is solved using Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Skyscraper, Naked Single, Full House techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Locked Candidates Type 1 (Pointing): 4 in b8 => r9c9<>4
  2. Locked Candidates Type 2 (Claiming): 2 in r8 => r7c7<>2
  3. Locked Candidates Type 2 (Claiming): 8 in c8 => r1c79,r23c7<>8
  4. Skyscraper: 2 in r1c1,r7c2 (connected by r17c6) => r3c2,r9c1<>2
  5. Row 3 / Column 2 → 8 (Naked Single)
  6. Row 7 / Column 2 → 2 (Full House)
  7. Row 9 / Column 1 → 8 (Full House)
  8. Row 1 / Column 3 → 6 (Naked Single)
  9. Row 5 / Column 3 → 8 (Full House)
  10. Row 5 / Column 1 → 6 (Full House)
  11. Row 7 / Column 6 → 1 (Naked Single)
  12. Row 9 / Column 9 → 1 (Naked Single)
  13. Row 2 / Column 1 → 1 (Naked Single)
  14. Row 1 / Column 6 → 2 (Naked Single)
  15. Row 3 / Column 6 → 6 (Full House)
  16. Row 9 / Column 4 → 4 (Naked Single)
  17. Row 9 / Column 5 → 2 (Full House)
  18. Row 3 / Column 5 → 4 (Full House)
  19. Row 2 / Column 7 → 6 (Naked Single)
  20. Row 2 / Column 8 → 8 (Full House)
  21. Row 1 / Column 1 → 3 (Naked Single)
  22. Row 3 / Column 1 → 2 (Full House)
  23. Row 3 / Column 4 → 1 (Naked Single)
  24. Row 1 / Column 4 → 8 (Full House)
  25. Row 3 / Column 7 → 3 (Full House)
  26. Row 7 / Column 7 → 8 (Naked Single)
  27. Row 7 / Column 9 → 6 (Full House)
  28. Row 1 / Column 8 → 9 (Naked Single)
  29. Row 6 / Column 7 → 2 (Naked Single)
  30. Row 4 / Column 7 → 9 (Naked Single)
  31. Row 4 / Column 9 → 8 (Full House)
  32. Row 6 / Column 9 → 3 (Naked Single)
  33. Row 6 / Column 8 → 6 (Full House)
  34. Row 8 / Column 8 → 2 (Full House)
  35. Row 1 / Column 9 → 4 (Naked Single)
  36. Row 1 / Column 7 → 1 (Full House)
  37. Row 8 / Column 7 → 4 (Full House)
  38. Row 8 / Column 9 → 9 (Full House)
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