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

This Sudoku Puzzle has 58 steps and it is solved using Naked Single, Full House, Hidden Single, undefined, Uniqueness Test 4, Finned Swordfish, Simple Colors Trap, Naked Pair techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Row 4 / Column 3 → 7 (Naked Single)
  2. Row 4 / Column 1 → 3 (Naked Single)
  3. Row 6 / Column 3 → 1 (Full House)
  4. Row 6 / Column 6 → 8 (Hidden Single)
  5. Row 2 / Column 5 → 3 (Hidden Single)
  6. Row 5 / Column 5 → 4 (Naked Single)
  7. Row 5 / Column 6 → 1 (Naked Single)
  8. Row 5 / Column 4 → 3 (Full House)
  9. Row 9 / Column 2 → 3 (Hidden Single)
  10. Row 4 / Column 6 → 6 (Hidden Single)
  11. Row 8 / Column 7 → 6 (Hidden Single)
  12. Row 9 / Column 3 → 9 (Hidden Single)
  13. Row 1 / Column 9 → 8 (Hidden Single)
  14. Row 6 / Column 7 → 3 (Hidden Single)
  15. Row 3 / Column 8 → 3 (Hidden Single)
  16. Row 1 / Column 2 → 6 (Hidden Single)
  17. Row 2 / Column 9 → 6 (Hidden Single)
  18. Row 1 / Column 7 → 4 (Hidden Single)
  19. Row 7 / Column 9 → 4 (Hidden Single)
  20. W-Wing: 7/5 in r6c5,r9c6 connected by 5 in r69c9 => r8c5<>7
  21. Row 6 / Column 5 → 7 (Hidden Single)
  22. Uniqueness Test 4: 5/9 in r4c45,r8c45 => r48c4<>5
  23. Finned Swordfish: 5 r169 c489 fr9c6 => r7c4<>5
  24. Simple Colors Trap: 5 (r1c4,r4c5,r6c9,r9c6) / (r1c8,r4c7,r6c4,r8c5,r9c9) => r9c8<>5
  25. XY-Chain: 2 2- r1c1 -7- r1c4 -5- r6c4 -2- r6c9 -5- r9c9 -2 => r9c1<>2
  26. Row 1 / Column 1 → 2 (Hidden Single)
  27. Row 7 / Column 3 → 2 (Hidden Single)
  28. Naked Pair: 5,7 in r1c8,r3c7 => r2c78<>5, r2c78<>7
  29. 2-String Kite: 7 in r1c4,r7c7 (connected by r1c8,r3c7) => r7c4<>7
  30. Row 7 / Column 4 → 1 (Naked Single)
  31. Row 2 / Column 7 → 1 (Hidden Single)
  32. Row 2 / Column 8 → 2 (Naked Single)
  33. Row 4 / Column 7 → 2 (Hidden Single)
  34. Row 6 / Column 9 → 5 (Full House)
  35. Row 6 / Column 4 → 2 (Full House)
  36. Row 9 / Column 9 → 2 (Full House)
  37. Row 4 / Column 4 → 9 (Naked Single)
  38. Row 4 / Column 5 → 5 (Full House)
  39. Row 8 / Column 5 → 9 (Full House)
  40. Row 8 / Column 4 → 7 (Naked Single)
  41. Row 1 / Column 4 → 5 (Full House)
  42. Row 9 / Column 6 → 5 (Full House)
  43. Row 1 / Column 8 → 7 (Full House)
  44. Row 3 / Column 7 → 5 (Full House)
  45. Row 7 / Column 7 → 7 (Full House)
  46. Row 7 / Column 2 → 5 (Full House)
  47. Row 9 / Column 8 → 1 (Naked Single)
  48. Row 8 / Column 8 → 5 (Full House)
  49. Row 9 / Column 1 → 7 (Full House)
  50. Row 8 / Column 2 → 4 (Naked Single)
  51. Row 2 / Column 2 → 7 (Full House)
  52. Row 3 / Column 1 → 8 (Naked Single)
  53. Row 8 / Column 1 → 1 (Full House)
  54. Row 8 / Column 3 → 8 (Full House)
  55. Row 2 / Column 6 → 4 (Naked Single)
  56. Row 2 / Column 3 → 5 (Full House)
  57. Row 3 / Column 3 → 4 (Full House)
  58. Row 3 / Column 6 → 7 (Full House)
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