I prefabricated a solution grid, starting from random grids wont achive this, I thought.
So here are two examples from the same solution grid:
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.6.7..38..39.....4....1..5..9...2.3....1....96....85..1...8.6.......34....86....5
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Analysis results
Difficulty rating: 4,4
This Sudoku can be solved using the following logical methods:
56 x Hidden Single
1 x X-Wing
1 x XY-Wing
1 x XYZ-Wing
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.617.....5.98.........14....9...2.31.......696..9.85.7...............4183.86.....
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Analysis results
Difficulty rating: 4,4
This Sudoku can be solved using the following logical methods:
52 x Hidden Single
4 x Direct Hidden Pair
2 x Pointing
1 x X-Wing
1 x XY-Wing
1 x XYZ-Wing
After generating them, I found 2 more examples from the same grid which don't solve like intended, but are to nice to not mention them:
a swordfish(needed) which reveals an xy-wing:
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....95.8..3.........7....56....6.....4....2.9..2.3...71....9...9.62...183..64....
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Analysis results
Difficulty rating: 4,2
This Sudoku can be solved using the following logical methods:
53 x Hidden Single
1 x Direct Pointing
3 x Naked Single
5 x Pointing
1 x Claiming
2 x Naked Pair
1 x Naked Triplet
1 x Swordfish
1 x XY-Wing
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..1.9.......8.....2..3.4.....54.2.318.3.5....6.....5.7....8..23..62..4..3......95
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Analysis results
Difficulty rating: 4,2
This Sudoku can be solved using the following logical methods:
52 x Hidden Single
1 x Direct Pointing
2 x Direct Hidden Pair
1 x Swordfish
1 x XY-Wing
Is this coincidence or a result of the way I prefabricated the solution grid?
