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

This Sudoku Puzzle has 10 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Uniqueness Test 3, Naked Single, Give Up techniques.

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

Solution Steps:

  1. Row 9 / Column 1 → 2 (Hidden Single)
  2. Locked Candidates Type 1 (Pointing): 4 in b1 => r456c1<>4
  3. Locked Candidates Type 1 (Pointing): 8 in b1 => r6c2<>8
  4. Locked Candidates Type 1 (Pointing): 4 in b3 => r456c7<>4
  5. Locked Candidates Type 1 (Pointing): 9 in b3 => r456c7<>9
  6. Locked Candidates Type 1 (Pointing): 6 in b7 => r7c46<>6
  7. Locked Candidates Type 2 (Claiming): 2 in c5 => r5c46,r6c46<>2
  8. Uniqueness Test 3: 2/8 in r2c46,r8c46 => r2c2<>1, r2c2<>9
  9. Row 2 / Column 2 → 8 (Naked Single)
  10. Give Up: Don't know how to proceed!
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