public IEnumerable<Cell> GetValidMoves(IGame game)
{
return
from col in Enumerable.Range(0, game.ColumnCount)
let cell = game.Cells().Where(c => c.Col == col && game[c] == BlockState.Empty)
.OrderByDescending(c => c.Row)
.FirstOrNull()
where cell.HasValue
select cell.Value;
}
public IEnumerable<Cell> GetValidMoves(IGame game)
{
return game.Cells().Where(cell => game[cell] == BlockState.Empty);
}