private IActionResult BuildSolutionModel(Puzzle puzzle, MessageLog log = null)
{
var model = new PageModel(log);
model.InitialState = puzzle.Copy();
model.Puzzle = puzzle;
model.PageTitle = "Sudoku brain";
var solver = new PuzzleSolver(model.Log);
int previousNumberFilledIn = puzzle.CountFilledInCells;
while (solver.ApplyAllStrats(puzzle))
{
int currentNumberFilledIn = puzzle.CountFilledInCells;
if (currentNumberFilledIn > previousNumberFilledIn)
{
puzzle.WriteGridAsText(model.Log);
}
if (currentNumberFilledIn == 81)
{
break;
}
previousNumberFilledIn = currentNumberFilledIn;
}
solver.EndSolutionStats(puzzle);
return(View("Index", model));
}