private static void SolveSmall()
{
SudokuBoard board = SudokuFactory.SizeAndBoxes(4, 4, 2, 2);
board.AddRow("0003");
board.AddRow("0004");
board.AddRow("1000");
board.AddRow("4000");
CompleteSolve(board);
}
private static void SolveFail()
{
SudokuBoard board = SudokuFactory.SizeAndBoxes(4, 4, 2, 2);
board.AddRow("0003");
board.AddRow("0204"); // the 2 must be a 1 on this row to be solvable
board.AddRow("1000");
board.AddRow("4000");
CompleteSolve(board);
}