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

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

Try To Solve This Puzzle

## Solution Steps:

1. Row 2 / Column 1 → 2 (Hidden Single)
2. Locked Candidates Type 1 (Pointing): 5 in b1 => r1c4<>5
3. Locked Candidates Type 1 (Pointing): 4 in b4 => r7c2<>4
4. Locked Candidates Type 1 (Pointing): 1 in b5 => r89c4<>1
5. Locked Candidates Type 1 (Pointing): 2 in b6 => r4c45<>2
6. Naked Triple: 4,5,7 in r2c46,r3c5 => r1c46<>4, r1c46<>7
7. Row 1 / Column 9 → 4 (Hidden Single)
8. Naked Triple: 4,5,7 in r2c467 => r2c3<>7
9. Naked Triple: 6,7,9 in r5c367 => r5c4<>6, r5c45<>7, r5c45<>9
10. Hidden Pair: 1,3 in r39c8 => r3c8<>7, r9c8<>2
11. X-Wing: 6 c37 r57 => r5c6<>6
12. Row 1 / Column 6 → 6 (Hidden Single)
13. Row 1 / Column 4 → 9 (Naked Single)
14. Naked Triple: 4,7,9 in r46c5,r5c6 => r46c4<>4, r46c4<>7
15. Locked Candidates Type 1 (Pointing): 4 in b5 => r7c5<>4
16. Row 7 / Column 3 → 4 (Hidden Single)
17. Row 8 / Column 3 → 8 (Naked Single)
18. Row 2 / Column 3 → 3 (Naked Single)
19. Row 7 / Column 2 → 2 (Naked Single)
20. Row 8 / Column 9 → 2 (Naked Single)
21. Row 2 / Column 9 → 8 (Naked Single)
22. Row 3 / Column 3 → 7 (Naked Single)
23. Row 5 / Column 3 → 6 (Full House)
24. Row 7 / Column 5 → 9 (Naked Single)
25. Row 9 / Column 2 → 5 (Naked Single)
26. Row 9 / Column 1 → 6 (Full House)
27. Row 4 / Column 9 → 6 (Naked Single)
28. Row 9 / Column 9 → 3 (Full House)
29. Row 8 / Column 4 → 4 (Naked Single)
30. Row 1 / Column 8 → 7 (Naked Single)
31. Row 1 / Column 1 → 5 (Naked Single)
32. Row 1 / Column 2 → 8 (Full House)
33. Row 3 / Column 5 → 5 (Naked Single)
34. Row 7 / Column 7 → 6 (Naked Single)
35. Row 7 / Column 8 → 8 (Full House)
36. Row 4 / Column 4 → 1 (Naked Single)
37. Row 9 / Column 8 → 1 (Naked Single)
38. Row 8 / Column 7 → 9 (Full House)
39. Row 8 / Column 6 → 1 (Full House)
40. Row 2 / Column 7 → 5 (Naked Single)
41. Row 6 / Column 8 → 9 (Naked Single)
42. Row 2 / Column 4 → 7 (Naked Single)
43. Row 2 / Column 6 → 4 (Full House)
44. Row 3 / Column 7 → 1 (Naked Single)
45. Row 3 / Column 8 → 3 (Full House)
46. Row 5 / Column 7 → 7 (Full House)
47. Row 4 / Column 8 → 2 (Full House)
48. Row 5 / Column 5 → 2 (Naked Single)
49. Row 4 / Column 2 → 4 (Naked Single)
50. Row 6 / Column 2 → 1 (Full House)
51. Row 6 / Column 4 → 6 (Naked Single)
52. Row 9 / Column 6 → 7 (Naked Single)
53. Row 9 / Column 4 → 2 (Full House)
54. Row 5 / Column 6 → 9 (Full House)
55. Row 5 / Column 4 → 5 (Full House)
56. Row 6 / Column 1 → 7 (Naked Single)
57. Row 4 / Column 1 → 9 (Full House)
58. Row 4 / Column 5 → 7 (Full House)
59. Row 6 / Column 5 → 4 (Full House)