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

This Sudoku Puzzle has 6 steps and it is solved using Naked Single, Hidden Single, Locked Candidates Type 2 (Claiming), Discontinuous Nice Loop, Give Up techniques.

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

Solution Steps:

  1. Row 9 / Column 4 → 5 (Naked Single)
  2. Row 3 / Column 6 → 5 (Hidden Single)
  3. Row 4 / Column 6 → 3 (Hidden Single)
  4. Locked Candidates Type 2 (Claiming): 7 in c6 => r8c5<>7
  5. Discontinuous Nice Loop: 8 r7c3 -8- r7c2 =8= r1c2 =9= r1c6 -9- r9c6 -4- r9c3 =4= r7c3 => r7c3<>8
  6. Give Up: Don't know how to proceed!
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