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

This Sudoku Puzzle has 34 steps and it is solved using Hidden Single, Naked Single, Full House, Locked Triple, Locked Candidates Type 1 (Pointing), Naked Pair, Naked Triple, Uniqueness Test 1, Avoidable Rectangle Type 1, Give Up techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Row 6 / Column 6 → 9 (Hidden Single)
  2. Row 8 / Column 6 → 5 (Naked Single)
  3. Row 8 / Column 4 → 9 (Naked Single)
  4. Row 8 / Column 3 → 8 (Naked Single)
  5. Row 8 / Column 8 → 1 (Full House)
  6. Row 2 / Column 9 → 8 (Hidden Single)
  7. Row 6 / Column 3 → 6 (Hidden Single)
  8. Row 7 / Column 3 → 9 (Hidden Single)
  9. Row 7 / Column 9 → 7 (Hidden Single)
  10. Row 7 / Column 1 → 5 (Naked Single)
  11. Row 7 / Column 8 → 8 (Full House)
  12. Row 9 / Column 1 → 7 (Full House)
  13. Locked Triple: 1,5,7 in r456c2 => r12c2,r5c3<>5, r1c2,r5c3<>7
  14. Locked Candidates Type 1 (Pointing): 5 in b2 => r2c37<>5
  15. Locked Candidates Type 1 (Pointing): 5 in b5 => r5c27<>5
  16. Naked Pair: 3,4 in r2c3,r3c1 => r13c3<>4, r3c3<>3
  17. Naked Pair: 1,5 in r6c29 => r6c8<>5
  18. Naked Triple: 3,4,5 in r2c345 => r2c6<>3, r2c67<>4
  19. Row 2 / Column 6 → 1 (Naked Single)
  20. Naked Triple: 3,4,5 in r5c345 => r5c7<>4
  21. Uniqueness Test 1: 2/9 in r1c27,r2c27 => r1c7<>2, r1c7<>9
  22. Row 1 / Column 2 → 9 (Hidden Single)
  23. Row 2 / Column 2 → 2 (Naked Single)
  24. Row 2 / Column 7 → 9 (Naked Single)
  25. Row 1 / Column 8 → 2 (Hidden Single)
  26. Row 9 / Column 8 → 5 (Naked Single)
  27. Row 9 / Column 7 → 2 (Full House)
  28. Locked Candidates Type 1 (Pointing): 4 in b3 => r4c7<>4
  29. Avoidable Rectangle Type 1: 2/5 in r1c78,r9c78 => r1c7<>5
  30. Row 1 / Column 7 → 4 (Naked Single)
  31. Row 1 / Column 6 → 7 (Naked Single)
  32. Row 1 / Column 3 → 5 (Full House)
  33. Row 3 / Column 3 → 7 (Naked Single)
  34. Give Up: Don't know how to proceed!
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