public void AnEasyBoardCanBeSolved()
{
var grid = GridBuilder.Easy();
var allSolvers = new AllSolvers();
var pencilMarkReducer = new PencilMarkReducer();
var success = true;
while (success)
{
var pencilMarks = new PencilMarks(grid);
var reductions = pencilMarkReducer.Reduce(grid, pencilMarks);
var result = allSolvers.TryToSolveOneCell(grid, pencilMarks);
if (result.ProgressMade)
{
grid = result.Grid;
}
success = result.ProgressMade;
}
var notValidBecause = grid.ValidateCompleteBoard();
Assert.True(string.IsNullOrWhiteSpace(notValidBecause));
}
public SolverResult TryToSolveOneCell(Grid grid, PencilMarks pencilMarks)
{
foreach (var solver in solvers)
{
var result = solver.TryToSolveOneCell(grid, pencilMarks);
if (result.ProgressMade)
{
return(result);
}
}
return(SolverResult.Failed(grid));
}
