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

This Sudoku Puzzle has 70 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Triple, undefined, Full House, Naked Single techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Row 1 / Column 1 → 9 (Hidden Single)
  2. Row 9 / Column 3 → 9 (Hidden Single)
  3. Row 5 / Column 2 → 5 (Hidden Single)
  4. Row 5 / Column 1 → 4 (Hidden Single)
  5. Row 5 / Column 8 → 6 (Hidden Single)
  6. Row 5 / Column 5 → 9 (Hidden Single)
  7. Locked Candidates Type 1 (Pointing): 2 in b1 => r789c2<>2
  8. Locked Candidates Type 1 (Pointing): 3 in b1 => r2c5679<>3
  9. Locked Candidates Type 1 (Pointing): 7 in b4 => r8c3<>7
  10. Locked Candidates Type 1 (Pointing): 8 in b4 => r78c1<>8
  11. Locked Candidates Type 1 (Pointing): 3 in b6 => r6c5<>3
  12. Locked Candidates Type 2 (Claiming): 7 in r5 => r4c6<>7
  13. Locked Candidates Type 2 (Claiming): 8 in c4 => r79c6,r89c5<>8
  14. Naked Triple: 3,7,8 in r179c8 => r3c8<>3, r4c8<>7
  15. 2-String Kite: 5 in r3c8,r6c5 (connected by r4c8,r6c9) => r3c5<>5
  16. W-Wing: 3/7 in r1c8,r5c6 connected by 7 in r15c4 => r1c6<>3
  17. Finned X-Wing: 1 r17 c26 fr7c1 => r89c2<>1
  18. Finned X-Wing: 5 c68 r34 fr2c6 => r3c4<>5
  19. Row 8 / Column 4 → 5 (Hidden Single)
  20. Row 8 / Column 2 → 8 (Hidden Single)
  21. Row 9 / Column 2 → 7 (Hidden Single)
  22. Row 1 / Column 8 → 7 (Hidden Single)
  23. Row 5 / Column 4 → 7 (Hidden Single)
  24. Row 5 / Column 6 → 3 (Full House)
  25. Row 2 / Column 6 → 7 (Hidden Single)
  26. Row 2 / Column 5 → 8 (Hidden Single)
  27. Row 4 / Column 6 → 8 (Hidden Single)
  28. Row 6 / Column 1 → 8 (Hidden Single)
  29. Row 1 / Column 6 → 1 (Hidden Single)
  30. Row 2 / Column 9 → 5 (Hidden Single)
  31. Row 3 / Column 8 → 9 (Naked Single)
  32. Row 4 / Column 8 → 5 (Naked Single)
  33. Row 4 / Column 5 → 2 (Naked Single)
  34. Row 6 / Column 5 → 5 (Full House)
  35. Row 4 / Column 1 → 6 (Naked Single)
  36. Row 4 / Column 3 → 7 (Naked Single)
  37. Row 6 / Column 3 → 2 (Full House)
  38. Row 4 / Column 9 → 4 (Naked Single)
  39. Row 4 / Column 7 → 9 (Full House)
  40. Row 1 / Column 9 → 3 (Naked Single)
  41. Row 1 / Column 4 → 2 (Naked Single)
  42. Row 1 / Column 2 → 4 (Full House)
  43. Row 6 / Column 9 → 7 (Naked Single)
  44. Row 6 / Column 7 → 3 (Full House)
  45. Row 3 / Column 4 → 3 (Naked Single)
  46. Row 3 / Column 5 → 4 (Naked Single)
  47. Row 3 / Column 6 → 5 (Full House)
  48. Row 3 / Column 7 → 6 (Naked Single)
  49. Row 2 / Column 7 → 4 (Full House)
  50. Row 3 / Column 2 → 2 (Full House)
  51. Row 9 / Column 7 → 1 (Naked Single)
  52. Row 8 / Column 7 → 7 (Full House)
  53. Row 9 / Column 5 → 3 (Naked Single)
  54. Row 8 / Column 5 → 1 (Full House)
  55. Row 9 / Column 8 → 8 (Naked Single)
  56. Row 7 / Column 8 → 3 (Full House)
  57. Row 9 / Column 4 → 6 (Naked Single)
  58. Row 7 / Column 4 → 8 (Full House)
  59. Row 9 / Column 9 → 2 (Naked Single)
  60. Row 8 / Column 9 → 6 (Full House)
  61. Row 9 / Column 6 → 4 (Full House)
  62. Row 7 / Column 6 → 2 (Full House)
  63. Row 8 / Column 3 → 3 (Naked Single)
  64. Row 8 / Column 1 → 2 (Full House)
  65. Row 7 / Column 1 → 1 (Naked Single)
  66. Row 2 / Column 1 → 3 (Full House)
  67. Row 2 / Column 3 → 6 (Naked Single)
  68. Row 2 / Column 2 → 1 (Full House)
  69. Row 7 / Column 2 → 6 (Full House)
  70. Row 7 / Column 3 → 4 (Full House)
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