# Solution for Evil Sudoku #1223713524895

1
8
3
4
2
2
7
3
7
2
3
2
5
8
7
1
2
3
7
8
1
4
1
3
5
4

This Sudoku Puzzle has 52 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Triple, Naked Single, Locked Pair, Full House, Give Up techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 2 / Column 2 → 3 (Hidden Single)
2. Row 5 / Column 5 → 3 (Hidden Single)
3. Row 5 / Column 1 → 1 (Hidden Single)
4. Row 7 / Column 1 → 4 (Hidden Single)
5. Row 7 / Column 7 → 3 (Hidden Single)
6. Row 8 / Column 1 → 3 (Hidden Single)
7. Locked Candidates Type 1 (Pointing): 4 in b3 => r5c9<>4
8. Locked Candidates Type 1 (Pointing): 5 in b7 => r9c5<>5
9. Locked Candidates Type 1 (Pointing): 8 in b8 => r9c79<>8
10. Locked Candidates Type 2 (Claiming): 8 in c9 => r1c8<>8
11. Naked Triple: 4,6,9 in r5c237 => r5c89<>6, r5c89<>9
12. Row 5 / Column 8 → 7 (Naked Single)
13. Row 5 / Column 9 → 7 (Naked Single)
14. Row 8 / Column 6 → 7 (Hidden Single)
15. Row 1 / Column 3 → 7 (Hidden Single)
16. Row 2 / Column 4 → 7 (Hidden Single)
17. Row 1 / Column 9 → 4 (Hidden Single)
18. Row 1 / Column 5 → 8 (Hidden Single)
19. Row 3 / Column 9 → 8 (Hidden Single)
20. Row 9 / Column 4 → 8 (Hidden Single)
21. Row 9 / Column 2 → 2 (Hidden Single)
22. Row 7 / Column 4 → 2 (Hidden Single)
23. Row 3 / Column 3 → 2 (Hidden Single)
24. Row 8 / Column 8 → 2 (Hidden Single)
25. Row 9 / Column 1 → 5 (Hidden Single)
26. Row 3 / Column 2 → 4 (Hidden Single)
27. Row 8 / Column 7 → 8 (Hidden Single)
28. Row 2 / Column 3 → 5 (Hidden Single)
29. Row 6 / Column 7 → 5 (Hidden Single)
30. Row 1 / Column 8 → 5 (Hidden Single)
31. Row 4 / Column 2 → 5 (Hidden Single)
32. Row 6 / Column 6 → 4 (Hidden Single)
33. Row 5 / Column 7 → 4 (Hidden Single)
34. Row 4 / Column 8 → 8 (Hidden Single)
35. Row 6 / Column 2 → 8 (Hidden Single)
36. Row 4 / Column 3 → 4 (Hidden Single)
37. Row 6 / Column 4 → 1 (Hidden Single)
38. Row 3 / Column 6 → 1 (Hidden Single)
39. Row 6 / Column 8 → 6 (Hidden Single)
40. Row 3 / Column 5 → 5 (Hidden Single)
41. Row 7 / Column 6 → 5 (Hidden Single)
42. Locked Pair: 6,9 in r9c79 => r7c9,r9c5<>6, r7c89,r9c5<>9
43. Row 9 / Column 5 → 9 (Naked Single)
44. Row 7 / Column 8 → 1 (Naked Single)
45. Row 2 / Column 8 → 9 (Full House)
46. Row 9 / Column 7 → 6 (Full House)
47. Row 2 / Column 7 → 6 (Full House)
48. Row 7 / Column 9 → 1 (Naked Single)
49. Row 7 / Column 5 → 6 (Naked Single)
50. Row 9 / Column 9 → 6 (Naked Single)
51. Row 2 / Column 9 → 1 (Naked Single)
52. Give Up: Don't know how to proceed!