Class Possibility

A concrete possibility in the ExactCoverGraph. This represents a single possible value for a single square in the puzzle.

Inheritance

System.Object

Possibility

Implements

IPossibility

Inherited Members

System.Object.Equals(System.Object)

System.Object.Equals(System.Object, System.Object)

System.Object.GetHashCode()

System.Object.GetType()

System.Object.MemberwiseClone()

System.Object.ReferenceEquals(System.Object, System.Object)

System.Object.ToString()

Namespace: SudokuSpice.ConstraintBased

Assembly: SudokuSpice.dll

Syntax

public sealed class Possibility : IPossibility

Properties

Coordinate

The square this possibility is for.

Declaration

public Coordinate Coordinate { get; }

Property Value

Type	Description
Coordinate

Index

The value index this possibility is for (corresponds to the values in AllPossibleValues).

Declaration

public int Index { get; }

Property Value

Type	Description
System.Int32

IsConcrete

True if this possibility is a concrete possibility, i.e. a leaf node in the graph, as opposed to a group of other possibilities.

Declaration

public bool IsConcrete { get; }

Property Value

Type	Description
System.Boolean

State

The current state of this node in the ExactCoverGraph.

Declaration

public NodeState State { get; }

Property Value

Type	Description
NodeState

Methods

TryDrop()

Tries to drop this possibility, if that is compatible with existing objectives.

This is meant to be checked during matrix construction so that constraints can drop possibilities that violate the puzzle's preset values.

If this method fails, it suggests that the current puzzle cannot satisfy all the current constraints.

Declaration

public bool TryDrop()

Returns

Type	Description
System.Boolean	True if the possibility is already dropped or was successfully dropped from all existing objectives, else false.

Implements

IPossibility