| Name | Value | Description |
| kDistinctlyManySolutions | 2 | There are distinctly many, equally good solutions. |
| kInfinitelyManySolutions | 3 | There are infinitely many, equally good solutions. |
| kNoSolution | 4 | No solution exists. |
| kUniqueSolution | 1 | There is just the one solution. |
| kUnknownSolutionNature | 0 | Could not determine a solution strategy. |