Sudoku: Difference between revisions
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/// Backtrack recursvely and immutably from index |
/// Backtrack recursvely and immutably from index |
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let rec backtracker (values:Map< |
let rec backtracker (values:Map<_,_>) = function |
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| None -> Some values // solved! |
| None -> Some values // solved! |
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| Some s when values[s] > 0 -> backtracker values (next s) // square not empty |
| Some s when values[s] > 0 -> backtracker values (next s) // square not empty |
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