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

This Sudoku Puzzle has 14 steps and it is solved using Hidden Single, Locked Triple, Naked Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Triple, undefined, Give Up techniques.

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

Solution Steps:

  1. Row 2 / Column 8 → 5 (Hidden Single)
  2. Row 9 / Column 7 → 5 (Hidden Single)
  3. Row 1 / Column 7 → 6 (Hidden Single)
  4. Locked Triple: 1,3,9 in r456c3 => r189c3,r46c1,r5c2<>3, r18c3,r46c1,r5c2<>9, r46c1,r5c2,r89c3<>1
  5. Row 8 / Column 3 → 2 (Naked Single)
  6. Locked Candidates Type 1 (Pointing): 5 in b4 => r78c1<>5
  7. Row 8 / Column 2 → 5 (Hidden Single)
  8. Locked Candidates Type 2 (Claiming): 2 in c7 => r4c9,r5c8<>2
  9. Locked Candidates Type 2 (Claiming): 8 in c7 => r46c9<>8
  10. Locked Candidates Type 2 (Claiming): 9 in c7 => r46c9,r5c8<>9
  11. Naked Triple: 7,8,9 in r1c3,r2c12 => r13c1<>7, r1c12,r3c12<>9, r13c2<>8
  12. Locked Candidates Type 1 (Pointing): 9 in b1 => r2c9<>9
  13. 2-String Kite: 8 in r2c9,r9c3 (connected by r1c3,r2c2) => r9c9<>8
  14. Give Up: Don't know how to proceed!
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