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

This Sudoku Puzzle has 57 steps and it is solved using Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Locked Pair, Naked Pair, Naked Triple, Uniqueness Test 4, undefined, Naked Single, Full House, Hidden Single techniques.

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

Solution Steps:

  1. Locked Candidates Type 1 (Pointing): 9 in b2 => r3c2<>9
  2. Locked Candidates Type 1 (Pointing): 6 in b3 => r3c46<>6
  3. Locked Candidates Type 1 (Pointing): 4 in b7 => r9c6<>4
  4. Locked Candidates Type 1 (Pointing): 7 in b7 => r9c456<>7
  5. Locked Candidates Type 2 (Claiming): 1 in c1 => r9c23<>1
  6. Locked Candidates Type 2 (Claiming): 3 in c1 => r9c23<>3
  7. Locked Candidates Type 2 (Claiming): 5 in c5 => r45c4,r5c6<>5
  8. Locked Pair: 3,6 in r5c46 => r5c3,r6c5<>3, r4c4,r5c9<>6
  9. Naked Pair: 3,7 in r1c59 => r1c23<>3, r1c23<>7
  10. Naked Triple: 3,6,7 in r3c279 => r3c46<>3, r3c46<>7
  11. Uniqueness Test 4: 3/6 in r2c46,r5c46 => r2c46<>3
  12. Locked Candidates Type 1 (Pointing): 3 in b2 => r9c5<>3
  13. XY-Chain: 6 6- r3c7 -3- r3c2 -7- r9c2 -4- r1c2 -9- r4c2 -6 => r4c7<>6
  14. Row 4 / Column 7 → 8 (Naked Single)
  15. Row 4 / Column 4 → 7 (Naked Single)
  16. Row 4 / Column 5 → 5 (Naked Single)
  17. Row 4 / Column 3 → 9 (Naked Single)
  18. Row 4 / Column 2 → 6 (Full House)
  19. Row 6 / Column 5 → 8 (Naked Single)
  20. Row 1 / Column 3 → 4 (Naked Single)
  21. Row 9 / Column 5 → 2 (Naked Single)
  22. Row 1 / Column 2 → 9 (Naked Single)
  23. Row 9 / Column 3 → 7 (Naked Single)
  24. Row 9 / Column 2 → 4 (Naked Single)
  25. Row 8 / Column 6 → 7 (Hidden Single)
  26. Row 2 / Column 6 → 6 (Naked Single)
  27. Row 2 / Column 4 → 2 (Naked Single)
  28. Row 5 / Column 6 → 3 (Naked Single)
  29. Row 5 / Column 4 → 6 (Full House)
  30. Row 9 / Column 6 → 9 (Naked Single)
  31. Row 3 / Column 6 → 5 (Naked Single)
  32. Row 7 / Column 6 → 4 (Full House)
  33. Row 8 / Column 4 → 3 (Naked Single)
  34. Row 3 / Column 4 → 9 (Naked Single)
  35. Row 7 / Column 7 → 3 (Naked Single)
  36. Row 8 / Column 1 → 1 (Naked Single)
  37. Row 9 / Column 1 → 3 (Full House)
  38. Row 9 / Column 4 → 8 (Naked Single)
  39. Row 7 / Column 4 → 5 (Full House)
  40. Row 7 / Column 9 → 8 (Full House)
  41. Row 9 / Column 9 → 1 (Full House)
  42. Row 3 / Column 7 → 6 (Naked Single)
  43. Row 8 / Column 7 → 4 (Naked Single)
  44. Row 8 / Column 9 → 9 (Full House)
  45. Row 6 / Column 7 → 1 (Full House)
  46. Row 5 / Column 9 → 5 (Naked Single)
  47. Row 5 / Column 3 → 1 (Full House)
  48. Row 6 / Column 9 → 6 (Full House)
  49. Row 6 / Column 2 → 3 (Naked Single)
  50. Row 6 / Column 3 → 5 (Full House)
  51. Row 2 / Column 3 → 3 (Full House)
  52. Row 3 / Column 2 → 7 (Naked Single)
  53. Row 2 / Column 2 → 1 (Full House)
  54. Row 2 / Column 5 → 7 (Full House)
  55. Row 3 / Column 9 → 3 (Full House)
  56. Row 1 / Column 5 → 3 (Full House)
  57. Row 1 / Column 9 → 7 (Full House)
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