Abstract class: PuzzleSolvers.Constraint

• Assembly: PuzzleSolvers, Version=1.0.0.9999, Culture=neutral, PublicKeyToken=null
• Namespace: PuzzleSolvers
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  Inherits from:

  • object
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  Derived types:

  • PuzzleSolvers.AnagramConstraint
  • PuzzleSolvers.AntiChessConstraint
  • PuzzleSolvers.AntiCloneConstraint
  • PuzzleSolvers.BetweenLineConstraint
  • PuzzleSolvers.CloneConstraint
  • PuzzleSolvers.CombinationsConstraint
  • PuzzleSolvers.EqualSumsConstraint
  • PuzzleSolvers.Exotic.LittleSandwichConstraint
  • PuzzleSolvers.Exotic.TrackConstraint
  • PuzzleSolvers.FindTheValueConstraint
  • PuzzleSolvers.FiveCellLambdaConstraint
  • PuzzleSolvers.FourCellLambdaConstraint
  • PuzzleSolvers.GivenConstraint
  • PuzzleSolvers.IndirectSumConstraint
  • PuzzleSolvers.Kyudoku6x6Constraint
  • PuzzleSolvers.LambdaConstraint
  • PuzzleSolvers.LessThanConstraint
  • PuzzleSolvers.NoConsecutiveConstraint
  • PuzzleSolvers.NoTouchModuloConstraint
  • PuzzleSolvers.OddEvenConstraint
  • PuzzleSolvers.OffsetCloneConstraint
  • PuzzleSolvers.OneCellLambdaConstraint
  • PuzzleSolvers.OrConstraint
  • PuzzleSolvers.ParityEvennessConstraint
  • PuzzleSolvers.ParityNoTripletsConstraint
  • PuzzleSolvers.ParityUniqueRowsColumnsConstraint
  • PuzzleSolvers.ProductConstraint
  • PuzzleSolvers.SixCellLambdaConstraint
  • PuzzleSolvers.SumAlternativeConstraint
  • PuzzleSolvers.SumConstraint
  • PuzzleSolvers.ThreeCellLambdaConstraint
  • PuzzleSolvers.TwoCellLambdaConstraint
  • PuzzleSolvers.UniquenessConstraint

Summary

Abstract base class for all constraints in a puzzle.

Instance methods

ConstraintResult

Process(SolverState state) Abstract

Constraint implementations must use SolverState.MarkImpossible(int, int) to mark values that are known to be impossible given the incomplete grid exposed by SolverState.this[int].

Static methods

int	TranslateCoordinate(string str, int gridWidth = 9)	Converts a convenient coordinate notation into a puzzle-grid index.
IEnumerable<int>	TranslateCoordinates(string str, int gridWidth = 9)	Converts a convenient coordinate notation into puzzle-grid indices.

Instance properties

int[]	AffectedCells	The group of cells affected by this constraint, or null if it affects all of them.
bool	CanReevaluate Virtual	By default, a constraint is only evaluated once for every digit placed in the grid, but not when another constraint merely rules out a possibility. Derived types can override this and return true to indicate to the solver that the constraint should be reevaluated (meaning: have Constraint.Process(SolverState) called on it again) when another constraint rules out a value in one of the affected cells of this constraint.
int?	NumCombinations Virtual	Indicates an approximate number of possible combinations of digits this constraint can still accommodate. This will help the solver prioritize cells when multiple cells have the same number of combinations individually.