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

This Sudoku Puzzle has 37 steps and it is solved using Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), undefined, Empty Rectangle, Naked Single, Full House techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Locked Candidates Type 1 (Pointing): 5 in b3 => r3c2<>5
  2. Locked Candidates Type 2 (Claiming): 6 in r7 => r8c4<>6
  3. Locked Candidates Type 2 (Claiming): 8 in c4 => r7c5<>8
  4. 2-String Kite: 4 in r2c6,r5c3 (connected by r5c5,r6c6) => r2c3<>4
  5. W-Wing: 4/5 in r3c8,r6c2 connected by 5 in r5c38 => r3c2<>4
  6. XY-Wing: 5/8/4 in r35c8,r5c5 => r3c5<>4
  7. XY-Wing: 6/8/4 in r8c49,r9c7 => r8c8<>4
  8. 2-String Kite: 4 in r1c4,r7c8 (connected by r1c7,r3c8) => r7c4<>4
  9. Empty Rectangle: 4 in b2 (r8c14) => r2c1<>4
  10. Row 2 / Column 1 → 6 (Naked Single)
  11. Row 2 / Column 3 → 5 (Naked Single)
  12. Row 5 / Column 3 → 4 (Naked Single)
  13. Row 6 / Column 2 → 5 (Full House)
  14. Row 9 / Column 3 → 6 (Full House)
  15. Row 9 / Column 7 → 4 (Full House)
  16. Row 1 / Column 7 → 6 (Full House)
  17. Row 1 / Column 4 → 4 (Full House)
  18. Row 5 / Column 5 → 8 (Naked Single)
  19. Row 5 / Column 8 → 5 (Full House)
  20. Row 6 / Column 9 → 8 (Full House)
  21. Row 6 / Column 6 → 4 (Full House)
  22. Row 2 / Column 6 → 8 (Full House)
  23. Row 3 / Column 9 → 5 (Naked Single)
  24. Row 3 / Column 8 → 4 (Full House)
  25. Row 8 / Column 9 → 6 (Full House)
  26. Row 8 / Column 4 → 8 (Naked Single)
  27. Row 7 / Column 4 → 6 (Full House)
  28. Row 7 / Column 5 → 4 (Full House)
  29. Row 2 / Column 5 → 7 (Naked Single)
  30. Row 2 / Column 2 → 4 (Full House)
  31. Row 3 / Column 5 → 6 (Full House)
  32. Row 3 / Column 1 → 9 (Naked Single)
  33. Row 3 / Column 2 → 7 (Full House)
  34. Row 7 / Column 2 → 9 (Full House)
  35. Row 8 / Column 1 → 4 (Full House)
  36. Row 8 / Column 8 → 9 (Full House)
  37. Row 7 / Column 8 → 8 (Full House)
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