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

This Sudoku Puzzle has 32 steps and it is solved using Naked Single, Hidden Single, Full House, Locked Candidates Type 2 (Claiming), Skyscraper, Naked Triple, undefined, Uniqueness Test 2, Discontinuous Nice Loop, Give Up techniques.

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

Solution Steps:

  1. Row 6 / Column 2 → 7 (Naked Single)
  2. Row 3 / Column 3 → 2 (Hidden Single)
  3. Row 4 / Column 7 → 2 (Hidden Single)
  4. Row 2 / Column 7 → 7 (Hidden Single)
  5. Row 6 / Column 5 → 2 (Hidden Single)
  6. Row 4 / Column 2 → 4 (Hidden Single)
  7. Row 9 / Column 8 → 7 (Hidden Single)
  8. Row 7 / Column 9 → 2 (Hidden Single)
  9. Row 8 / Column 4 → 9 (Hidden Single)
  10. Row 4 / Column 4 → 6 (Naked Single)
  11. Row 5 / Column 5 → 3 (Naked Single)
  12. Row 5 / Column 6 → 9 (Full House)
  13. Row 5 / Column 1 → 6 (Naked Single)
  14. Row 2 / Column 1 → 8 (Naked Single)
  15. Row 7 / Column 1 → 9 (Full House)
  16. Row 6 / Column 3 → 9 (Naked Single)
  17. Row 4 / Column 3 → 1 (Full House)
  18. Row 4 / Column 8 → 9 (Full House)
  19. Row 1 / Column 2 → 3 (Naked Single)
  20. Row 2 / Column 3 → 6 (Full House)
  21. Row 1 / Column 9 → 9 (Hidden Single)
  22. Row 2 / Column 6 → 4 (Hidden Single)
  23. Row 9 / Column 5 → 4 (Hidden Single)
  24. Locked Candidates Type 2 (Claiming): 3 in r8 => r7c78<>3
  25. Skyscraper: 5 in r8c9,r9c4 (connected by r3c49) => r8c5<>5
  26. Locked Candidates Type 2 (Claiming): 5 in r8 => r7c78<>5
  27. Naked Triple: 1,4,8 in r7c278 => r7c5<>1, r7c56<>8
  28. 2-String Kite: 1 in r2c9,r8c5 (connected by r2c4,r3c5) => r8c9<>1
  29. Locked Candidates Type 2 (Claiming): 1 in c9 => r3c78<>1
  30. Uniqueness Test 2: 1/3 in r2c49,r3c49 => r3c578<>5
  31. Discontinuous Nice Loop: 3 r3c4 -3- r2c4 -1- r2c9 =1= r3c9 =5= r3c4 => r3c4<>3
  32. Give Up: Don't know how to proceed!
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