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

This Sudoku Puzzle has 59 steps and it is solved using Naked Single, Locked Candidates Type 1 (Pointing), Naked Pair, Naked Triple, Hidden Single, Hidden Pair, undefined, Sue de Coq, Full House techniques.

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

Solution Steps:

  1. Row 3 / Column 5 → 3 (Naked Single)
  2. Locked Candidates Type 1 (Pointing): 4 in b8 => r9c79<>4
  3. Naked Pair: 5,9 in r48c5 => r7c5<>5, r7c5<>9
  4. Naked Triple: 3,5,9 in r8c358 => r8c79<>3, r8c7<>5, r8c9<>9
  5. Row 9 / Column 9 → 9 (Hidden Single)
  6. Row 5 / Column 9 → 2 (Hidden Single)
  7. Locked Candidates Type 1 (Pointing): 5 in b9 => r45c8<>5
  8. Hidden Pair: 1,6 in r14c8 => r14c8<>3, r14c8<>8
  9. 2-String Kite: 1 in r1c8,r6c1 (connected by r4c8,r6c7) => r1c1<>1
  10. Finned X-Wing: 1 r26 c17 fr2c2 => r3c1<>1
  11. Finned X-Wing: 3 r16 c19 fr6c7 => r4c9<>3
  12. Sue de Coq: r1c46 - {1268} (r1c8 - {16}, r2c5 - {28}) => r1c19<>6
  13. XYZ-Wing: 1/3/8 in r1c9,r2c27 => r2c9<>3
  14. XY-Wing: 1/6/8 in r1c48,r2c9 => r1c9,r2c5<>8
  15. Row 1 / Column 9 → 3 (Naked Single)
  16. Row 2 / Column 5 → 2 (Naked Single)
  17. Row 1 / Column 1 → 2 (Naked Single)
  18. Row 6 / Column 9 → 7 (Naked Single)
  19. Row 1 / Column 6 → 6 (Naked Single)
  20. Row 7 / Column 5 → 8 (Naked Single)
  21. Row 8 / Column 9 → 4 (Naked Single)
  22. Row 1 / Column 8 → 1 (Naked Single)
  23. Row 1 / Column 4 → 8 (Full House)
  24. Row 3 / Column 6 → 7 (Naked Single)
  25. Row 3 / Column 4 → 1 (Full House)
  26. Row 8 / Column 7 → 7 (Naked Single)
  27. Row 2 / Column 7 → 8 (Naked Single)
  28. Row 2 / Column 9 → 6 (Full House)
  29. Row 4 / Column 9 → 8 (Full House)
  30. Row 4 / Column 8 → 6 (Naked Single)
  31. Row 3 / Column 2 → 9 (Naked Single)
  32. Row 3 / Column 1 → 6 (Full House)
  33. Row 9 / Column 7 → 3 (Naked Single)
  34. Row 5 / Column 8 → 3 (Naked Single)
  35. Row 6 / Column 7 → 1 (Naked Single)
  36. Row 6 / Column 1 → 3 (Full House)
  37. Row 8 / Column 8 → 5 (Naked Single)
  38. Row 9 / Column 4 → 4 (Naked Single)
  39. Row 5 / Column 2 → 8 (Naked Single)
  40. Row 2 / Column 1 → 1 (Naked Single)
  41. Row 2 / Column 2 → 3 (Full House)
  42. Row 4 / Column 2 → 1 (Full House)
  43. Row 7 / Column 8 → 2 (Naked Single)
  44. Row 9 / Column 8 → 8 (Full House)
  45. Row 9 / Column 6 → 2 (Full House)
  46. Row 8 / Column 5 → 9 (Naked Single)
  47. Row 4 / Column 5 → 5 (Full House)
  48. Row 8 / Column 3 → 3 (Full House)
  49. Row 7 / Column 3 → 9 (Full House)
  50. Row 7 / Column 6 → 3 (Naked Single)
  51. Row 7 / Column 4 → 5 (Full House)
  52. Row 4 / Column 7 → 4 (Naked Single)
  53. Row 5 / Column 7 → 5 (Full House)
  54. Row 5 / Column 4 → 7 (Naked Single)
  55. Row 4 / Column 4 → 3 (Full House)
  56. Row 4 / Column 6 → 9 (Naked Single)
  57. Row 4 / Column 1 → 7 (Full House)
  58. Row 5 / Column 1 → 9 (Full House)
  59. Row 5 / Column 6 → 4 (Full House)
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