// Castling Bits
// 3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0
// 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
// K|Q|k|q
// K = White Castle Kingside
// Q = White Castle Queenside
// k = Black Castle Kingside
// q = Black Castle Queenside
static Castling()
{
// Create bit shifts and masks.
_shifts = new[]
{
new[]
{
2, 3
},
new[]
{
0, 1
}
};
_masks = new[]
{
new[]
{
Bitwise.CreateUIntMask(2),
Bitwise.CreateUIntMask(3)
},
new[]
{
Bitwise.CreateUIntMask(0),
Bitwise.CreateUIntMask(1)
}
};
_unmasks = new[]
{
new[]
{
Bitwise.CreateUIntUnmask(2),
Bitwise.CreateUIntUnmask(3)
},
new[]
{
Bitwise.CreateUIntUnmask(0),
Bitwise.CreateUIntUnmask(1)
}
};
}
