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

This Sudoku Puzzle has 29 steps and it is solved using Naked Single, Hidden Single, Locked Candidates Type 1 (Pointing), Empty Rectangle, Discontinuous Nice Loop, Naked Triple, Hidden Pair, Uniqueness Test 1, Uniqueness Test 4, Uniqueness Test 6, Naked Pair, undefined, Give Up techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 8 / Column 1 → 2 (Naked Single)
2. Row 8 / Column 9 → 4 (Naked Single)
3. Row 8 / Column 3 → 8 (Naked Single)
4. Row 1 / Column 4 → 8 (Hidden Single)
5. Row 3 / Column 2 → 8 (Hidden Single)
6. Row 5 / Column 4 → 4 (Hidden Single)
7. Row 1 / Column 5 → 6 (Hidden Single)
8. Row 3 / Column 8 → 6 (Hidden Single)
9. Row 1 / Column 8 → 4 (Hidden Single)
10. Locked Candidates Type 1 (Pointing): 3 in b2 => r2c7<>3
11. Locked Candidates Type 1 (Pointing): 2 in b3 => r57c7<>2
12. Locked Candidates Type 1 (Pointing): 9 in b3 => r56c7<>9
13. Empty Rectangle: 1 in b5 (r3c47) => r6c7<>1
14. Discontinuous Nice Loop: 2 r9c4 -2- r3c4 -1- r2c5 -3- r2c4 =3= r9c4 => r9c4<>2
15. Locked Candidates Type 1 (Pointing): 2 in b8 => r2c6<>2
16. Naked Triple: 1,3,4 in r79c5,r9c4 => r79c6<>1
17. Hidden Pair: 1,4 in r7c25 => r7c5<>3
18. Locked Candidates Type 1 (Pointing): 3 in b8 => r9c8<>3
19. Uniqueness Test 1: 2/8 in r7c68,r9c68 => r7c8<>2, r7c8<>8
20. Row 7 / Column 8 → 3 (Naked Single)
21. Uniqueness Test 4: 1/2 in r2c47,r3c47 => r2c47<>1
22. Uniqueness Test 6: 1/3 in r2c45,r9c45 => r2c4,r9c5<>3
23. Row 2 / Column 5 → 3 (Hidden Single)
24. Row 9 / Column 4 → 3 (Hidden Single)
25. Uniqueness Test 1: 1/4 in r7c25,r9c25 => r9c2<>1, r9c2<>4
26. Row 9 / Column 2 → 6 (Naked Single)
27. Naked Pair: 1,4 in r29c3 => r456c3<>1
28. Almost Locked Set XZ-Rule: A=r6c24678 {135789}, B=r1235c7 {12379}, X=3, Z=7 => r6c9<>7
29. Give Up: Don't know how to proceed!