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

This Sudoku Puzzle has 68 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Full House, Naked Single, Hidden Pair, undefined, Empty Rectangle, Hidden Rectangle, Turbot Fish, Sue de Coq, Simple Colors Trap, Multi Colors 2 techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 1 / Column 4 → 1 (Hidden Single)
2. Row 2 / Column 8 → 3 (Hidden Single)
3. Row 5 / Column 3 → 3 (Hidden Single)
4. Row 2 / Column 1 → 4 (Hidden Single)
5. Row 1 / Column 8 → 9 (Hidden Single)
6. Row 6 / Column 2 → 5 (Hidden Single)
7. Row 4 / Column 2 → 8 (Hidden Single)
8. Locked Candidates Type 1 (Pointing): 6 in b2 => r5c5<>6
9. Locked Candidates Type 1 (Pointing): 9 in b5 => r5c1<>9
10. Row 4 / Column 1 → 9 (Hidden Single)
11. Row 4 / Column 3 → 6 (Hidden Single)
12. Row 5 / Column 1 → 2 (Full House)
13. Row 3 / Column 1 → 7 (Naked Single)
14. Row 9 / Column 1 → 6 (Full House)
15. Row 2 / Column 9 → 7 (Hidden Single)
16. Row 4 / Column 7 → 7 (Hidden Single)
17. Row 8 / Column 3 → 7 (Hidden Single)
18. Locked Candidates Type 1 (Pointing): 5 in b9 => r1c7<>5
19. Hidden Pair: 3,7 in r79c4 => r79c4<>2, r79c4<>5, r9c4<>4, r9c4<>8
20. Row 9 / Column 5 → 4 (Hidden Single)
21. Row 8 / Column 5 → 8 (Hidden Single)
22. XY-Wing: 2/4/8 in r15c7,r3c8 => r56c8<>8
23. Row 6 / Column 4 → 8 (Hidden Single)
24. Empty Rectangle: 2 in b8 (r6c68) => r7c8<>2
25. Hidden Rectangle: 2/6 in r1c25,r2c25 => r2c5<>2
26. Turbot Fish: 2 r1c5 =2= r2c4 -2- r4c4 =2= r4c9 => r1c9<>2
27. Sue de Coq: r45c9 - {1248} (r8c9 - {12}, r5c7 - {48}) => r3c9<>2
28. 2-String Kite: 2 in r6c6,r8c9 (connected by r4c9,r6c8) => r8c6<>2
29. Simple Colors Trap: 2 (r1c5,r4c4,r6c8,r8c9) / (r2c4,r4c9,r6c6,r7c5) => r7c7<>2
30. Multi Colors 2: 2 (r1c5,r4c4,r6c8,r8c9) / (r2c4,r4c9,r6c6,r7c5), (r1c7) / (r3c8) => r1c5,r4c4,r6c8,r8c9<>2
31. Row 4 / Column 4 → 4 (Naked Single)
32. Row 4 / Column 9 → 2 (Full House)
33. Row 6 / Column 8 → 6 (Naked Single)
34. Row 6 / Column 6 → 2 (Full House)
35. Row 8 / Column 9 → 1 (Naked Single)
36. Row 5 / Column 4 → 5 (Naked Single)
37. Row 5 / Column 8 → 1 (Naked Single)
38. Row 7 / Column 8 → 7 (Naked Single)
39. Row 8 / Column 6 → 9 (Naked Single)
40. Row 2 / Column 4 → 2 (Naked Single)
41. Row 5 / Column 5 → 9 (Naked Single)
42. Row 5 / Column 6 → 6 (Full House)
43. Row 7 / Column 4 → 3 (Naked Single)
44. Row 9 / Column 4 → 7 (Full House)
45. Row 7 / Column 7 → 5 (Naked Single)
46. Row 7 / Column 5 → 2 (Naked Single)
47. Row 7 / Column 6 → 1 (Naked Single)
48. Row 7 / Column 3 → 9 (Full House)
49. Row 9 / Column 6 → 5 (Full House)
50. Row 2 / Column 3 → 5 (Naked Single)
51. Row 2 / Column 5 → 6 (Naked Single)
52. Row 1 / Column 5 → 5 (Full House)
53. Row 2 / Column 2 → 9 (Full House)
54. Row 1 / Column 9 → 4 (Naked Single)
55. Row 1 / Column 7 → 2 (Naked Single)
56. Row 1 / Column 2 → 6 (Full House)
57. Row 5 / Column 9 → 8 (Naked Single)
58. Row 3 / Column 9 → 5 (Full House)
59. Row 3 / Column 8 → 8 (Full House)
60. Row 5 / Column 7 → 4 (Full House)
61. Row 9 / Column 8 → 2 (Full House)
62. Row 8 / Column 7 → 3 (Naked Single)
63. Row 8 / Column 2 → 2 (Full House)
64. Row 9 / Column 7 → 8 (Full House)
65. Row 9 / Column 3 → 1 (Naked Single)
66. Row 3 / Column 3 → 2 (Full House)
67. Row 3 / Column 2 → 1 (Full House)
68. Row 9 / Column 2 → 3 (Full House)