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

This Sudoku Puzzle has 61 steps and it is solved using Naked Single, Hidden Single, Locked Candidates Type 1 (Pointing), Naked Triple, Hidden Pair, undefined, Locked Candidates Type 2 (Claiming), Naked Pair, Full House techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Row 7 / Column 2 → 9 (Naked Single)
  2. Row 7 / Column 3 → 3 (Naked Single)
  3. Row 9 / Column 8 → 4 (Hidden Single)
  4. Row 8 / Column 2 → 8 (Hidden Single)
  5. Row 3 / Column 7 → 6 (Hidden Single)
  6. Row 5 / Column 1 → 8 (Hidden Single)
  7. Row 4 / Column 2 → 7 (Hidden Single)
  8. Row 4 / Column 5 → 4 (Hidden Single)
  9. Row 5 / Column 2 → 4 (Hidden Single)
  10. Locked Candidates Type 1 (Pointing): 2 in b3 => r56c8<>2
  11. Locked Candidates Type 1 (Pointing): 3 in b9 => r5c9<>3
  12. Naked Triple: 2,5,6 in r6c389 => r6c456<>5, r6c456<>6, r6c56<>2
  13. Locked Candidates Type 1 (Pointing): 6 in b5 => r5c89<>6
  14. Hidden Pair: 7,8 in r16c4 => r1c4<>6, r16c4<>9
  15. Row 9 / Column 4 → 9 (Hidden Single)
  16. 2-String Kite: 1 in r5c9,r7c4 (connected by r7c8,r9c9) => r5c4<>1
  17. 2-String Kite: 3 in r3c6,r4c7 (connected by r2c7,r3c8) => r4c6<>3
  18. 2-String Kite: 5 in r3c6,r4c1 (connected by r2c1,r3c2) => r4c6<>5
  19. 2-String Kite: 5 in r4c4,r8c3 (connected by r4c1,r6c3) => r8c4<>5
  20. Locked Candidates Type 2 (Claiming): 5 in c4 => r5c56<>5
  21. Naked Pair: 3,6 in r8c49 => r8c5<>3, r8c5<>6
  22. Locked Candidates Type 1 (Pointing): 6 in b8 => r5c4<>6
  23. W-Wing: 2/1 in r4c6,r5c9 connected by 1 in r9c69 => r5c56<>2
  24. Row 5 / Column 9 → 2 (Hidden Single)
  25. Row 6 / Column 9 → 6 (Naked Single)
  26. Row 6 / Column 8 → 5 (Naked Single)
  27. Row 8 / Column 9 → 3 (Naked Single)
  28. Row 9 / Column 9 → 1 (Full House)
  29. Row 7 / Column 8 → 6 (Full House)
  30. Row 7 / Column 4 → 1 (Full House)
  31. Row 6 / Column 3 → 2 (Naked Single)
  32. Row 4 / Column 1 → 5 (Full House)
  33. Row 8 / Column 3 → 5 (Full House)
  34. Row 9 / Column 2 → 2 (Full House)
  35. Row 3 / Column 2 → 5 (Full House)
  36. Row 8 / Column 4 → 6 (Naked Single)
  37. Row 8 / Column 5 → 2 (Full House)
  38. Row 2 / Column 1 → 7 (Naked Single)
  39. Row 1 / Column 1 → 2 (Full House)
  40. Row 4 / Column 4 → 3 (Naked Single)
  41. Row 3 / Column 6 → 3 (Naked Single)
  42. Row 3 / Column 8 → 2 (Full House)
  43. Row 1 / Column 8 → 9 (Naked Single)
  44. Row 4 / Column 7 → 1 (Naked Single)
  45. Row 2 / Column 7 → 3 (Full House)
  46. Row 4 / Column 6 → 2 (Full House)
  47. Row 5 / Column 8 → 3 (Full House)
  48. Row 2 / Column 8 → 1 (Full House)
  49. Row 5 / Column 4 → 5 (Naked Single)
  50. Row 5 / Column 5 → 6 (Naked Single)
  51. Row 5 / Column 6 → 1 (Full House)
  52. Row 9 / Column 6 → 5 (Naked Single)
  53. Row 9 / Column 5 → 3 (Full House)
  54. Row 1 / Column 5 → 8 (Naked Single)
  55. Row 2 / Column 6 → 9 (Naked Single)
  56. Row 2 / Column 5 → 5 (Full House)
  57. Row 6 / Column 5 → 9 (Full House)
  58. Row 1 / Column 4 → 7 (Naked Single)
  59. Row 1 / Column 6 → 6 (Full House)
  60. Row 6 / Column 6 → 7 (Full House)
  61. Row 6 / Column 4 → 8 (Full House)
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