![]() ![]() array fieldBounds ) ( mapM ( uncurry ( fmap. Node sudoku ( chooseMinLen ( map ( map treeAltToStandardOptimize ) subs )) maybeComplete :: T -> Maybe Complete maybeComplete sudoku = fmap ( Array. treeAltToStandardOptimize :: ATree T -> Tree T treeAltToStandardOptimize ( ANode sudoku subs ) = let chooseMinLen = chooseMinLen xs = minimumBy compareLength xs in Tree. This will make it easier (most of the time) for you to figure out which numbers go in the remaining empty spaces. This does a backtracking search, trying possibilities until it finds one which works, and backtracking when it can no longer make a legal move. One of the best ways to get started with solving a Sudoku puzzle is to look for low-hanging fruit the rows, columns or squares that already have the most numbers filled in. ![]() Pay attention to the cages groups of cells indicated by dotted lines. It possibly looks even more naïve than it actually is. Fill all rows, columns, and 3x3 blocks with numbers 1-9 exactly like in classic sudoku. 17 Constraint Propagation (a la Norvig).You can play 6圆 Sudoku puzzles here, and a standard Sudoku grid can be solved using the tool here. Enter the numbers of the Sudoku grid you want to solve in the upper fields and click on the 'Solve' button. 7 Very smart, with only a little guessing 6圆 Sudoku solver is used in the same way as the standard one.
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