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

This Sudoku Puzzle has 33 steps and it is solved using Hidden Single, Full House, Naked Single, Locked Candidates Type 2 (Claiming), undefined, Locked Candidates Type 1 (Pointing), Give Up techniques.

Naked Single Explanation
Hidden Single Explanation
Locked Candidates Explanation
Locked Candidates Explanation
Full House Explanation
Try To Solve This Puzzle

Solution Steps:

  1. Row 2 / Column 6 → 4 (Hidden Single)
  2. Row 3 / Column 4 → 1 (Hidden Single)
  3. Row 6 / Column 4 → 8 (Hidden Single)
  4. Row 4 / Column 2 → 4 (Hidden Single)
  5. Row 9 / Column 5 → 4 (Hidden Single)
  6. Row 6 / Column 2 → 7 (Hidden Single)
  7. Row 7 / Column 9 → 2 (Hidden Single)
  8. Row 1 / Column 2 → 3 (Hidden Single)
  9. Row 4 / Column 3 → 1 (Hidden Single)
  10. Row 1 / Column 7 → 9 (Hidden Single)
  11. Row 8 / Column 4 → 9 (Hidden Single)
  12. Row 4 / Column 4 → 6 (Full House)
  13. Row 2 / Column 9 → 1 (Hidden Single)
  14. Row 9 / Column 2 → 1 (Hidden Single)
  15. Row 8 / Column 5 → 1 (Hidden Single)
  16. Row 5 / Column 7 → 1 (Hidden Single)
  17. Row 4 / Column 7 → 5 (Hidden Single)
  18. Row 4 / Column 6 → 9 (Naked Single)
  19. Row 4 / Column 8 → 2 (Full House)
  20. Locked Candidates Type 2 (Claiming): 5 in r2 => r3c3<>5
  21. 2-String Kite: 6 in r2c8,r8c2 (connected by r8c9,r9c8) => r2c2<>6
  22. Locked Candidates Type 1 (Pointing): 6 in b1 => r7c3<>6
  23. XY-Chain: 2 2- r3c3 -6- r3c6 -5- r5c6 -3- r5c8 -9- r5c1 -6- r5c2 -2 => r2c2,r6c3<>2
  24. Row 2 / Column 2 → 5 (Naked Single)
  25. Row 6 / Column 3 → 9 (Naked Single)
  26. Row 5 / Column 1 → 6 (Naked Single)
  27. Row 5 / Column 2 → 2 (Full House)
  28. Row 7 / Column 1 → 9 (Full House)
  29. Row 6 / Column 8 → 3 (Naked Single)
  30. Row 5 / Column 8 → 9 (Full House)
  31. Row 6 / Column 5 → 2 (Full House)
  32. Row 7 / Column 3 → 5 (Naked Single)
  33. Give Up: Don't know how to proceed!
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