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

This Sudoku Puzzle has 64 steps and it is solved using Naked Single, Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Triple, Hidden Pair, undefined, Turbot Fish, Continuous Nice Loop, Full House, Skyscraper techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Row 1 / Column 6 → 5 (Naked Single)
  2. Row 3 / Column 8 → 1 (Naked Single)
  3. Row 1 / Column 8 → 9 (Naked Single)
  4. Row 7 / Column 8 → 2 (Hidden Single)
  5. Locked Candidates Type 1 (Pointing): 1 in b2 => r8c5<>1
  6. Locked Candidates Type 2 (Claiming): 3 in c5 => r6c4<>3
  7. Naked Triple: 1,5,6 in r7c12,r9c1 => r8c13<>1, r8c13<>6
  8. Locked Candidates Type 2 (Claiming): 1 in r8 => r7c9<>1
  9. Hidden Pair: 2,3 in r46c7 => r4c7<>1, r46c7<>5
  10. 2-String Kite: 4 in r2c5,r7c9 (connected by r7c6,r8c5) => r2c9<>4
  11. 2-String Kite: 6 in r5c8,r8c5 (connected by r8c9,r9c8) => r5c5<>6
  12. Turbot Fish: 8 r1c5 =8= r1c2 -8- r5c2 =8= r6c1 => r6c5<>8
  13. W-Wing: 8/5 in r2c9,r5c5 connected by 5 in r25c7 => r2c5<>8
  14. Continuous Nice Loop: 4/6/8 4= r2c5 =1= r1c5 =8= r3c4 -8- r3c9 -4- r7c9 =4= r7c6 -4- r8c5 =4= r2c5 =1 => r8c9<>4, r2c5<>6, r3c12<>8
  15. XY-Chain: 4 4- r2c5 -1- r1c5 -8- r5c5 -5- r5c7 -1- r8c7 -4 => r2c7,r8c5<>4
  16. Row 8 / Column 5 → 6 (Naked Single)
  17. Row 8 / Column 9 → 1 (Naked Single)
  18. Row 9 / Column 4 → 1 (Naked Single)
  19. Row 8 / Column 7 → 4 (Naked Single)
  20. Row 7 / Column 4 → 3 (Naked Single)
  21. Row 7 / Column 6 → 4 (Full House)
  22. Row 3 / Column 7 → 7 (Naked Single)
  23. Row 2 / Column 6 → 6 (Naked Single)
  24. Row 3 / Column 6 → 3 (Full House)
  25. Row 2 / Column 7 → 5 (Naked Single)
  26. Row 3 / Column 4 → 8 (Naked Single)
  27. Row 2 / Column 9 → 8 (Naked Single)
  28. Row 3 / Column 9 → 4 (Full House)
  29. Row 5 / Column 7 → 1 (Naked Single)
  30. Row 1 / Column 5 → 1 (Naked Single)
  31. Row 1 / Column 2 → 8 (Full House)
  32. Row 2 / Column 5 → 4 (Full House)
  33. Row 2 / Column 1 → 7 (Hidden Single)
  34. Row 5 / Column 5 → 8 (Hidden Single)
  35. Row 6 / Column 1 → 8 (Hidden Single)
  36. Locked Candidates Type 2 (Claiming): 6 in c3 => r4c12,r5c2<>6
  37. Skyscraper: 5 in r5c2,r9c1 (connected by r59c8) => r4c1,r7c2<>5
  38. XY-Chain: 1 1- r2c2 -9- r5c2 -5- r5c8 -6- r9c8 -5- r9c1 -6- r7c2 -1 => r4c2<>1
  39. XY-Chain: 9 9- r5c2 -5- r5c8 -6- r9c8 -5- r9c1 -6- r3c1 -2- r8c1 -9 => r4c1<>9
  40. Row 8 / Column 1 → 9 (Hidden Single)
  41. Row 8 / Column 3 → 2 (Full House)
  42. Row 6 / Column 7 → 2 (Hidden Single)
  43. Row 4 / Column 7 → 3 (Full House)
  44. Row 4 / Column 5 → 5 (Naked Single)
  45. Row 6 / Column 5 → 3 (Full House)
  46. Row 5 / Column 2 → 5 (Hidden Single)
  47. Row 5 / Column 8 → 6 (Naked Single)
  48. Row 5 / Column 4 → 9 (Full House)
  49. Row 9 / Column 8 → 5 (Full House)
  50. Row 6 / Column 4 → 6 (Full House)
  51. Row 7 / Column 9 → 6 (Full House)
  52. Row 9 / Column 1 → 6 (Full House)
  53. Row 4 / Column 9 → 9 (Naked Single)
  54. Row 6 / Column 9 → 5 (Full House)
  55. Row 6 / Column 3 → 9 (Full House)
  56. Row 7 / Column 2 → 1 (Naked Single)
  57. Row 7 / Column 1 → 5 (Full House)
  58. Row 3 / Column 1 → 2 (Naked Single)
  59. Row 3 / Column 2 → 6 (Full House)
  60. Row 4 / Column 1 → 1 (Full House)
  61. Row 4 / Column 2 → 2 (Naked Single)
  62. Row 2 / Column 2 → 9 (Full House)
  63. Row 2 / Column 3 → 1 (Full House)
  64. Row 4 / Column 3 → 6 (Full House)
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