private void score_evasions()
{
// Try good captures ordered by MVV/LVA, then non-captures if destination square
// is not under attack, ordered by history value, then bad-captures and quiet
// moves with a negative SEE. This last group is ordered by the SEE score.
// Skip if we don't have at least two moves to order
if (lastMovePos < 2)
{
return;
}
int seeScore;
for (int idx = 0; idx < lastMovePos; idx++)
{
Move m = ms[idx].move;
if ((seeScore = ((Position.PieceValueMidgame[pos.board[m & 0x3F]] >= Position.PieceValueMidgame[pos.board[((m >> 6) & 0x3F)]]) ? 1 : pos.see(m, false))) < 0)
{
ms[idx].score = seeScore - History.MaxValue; // Be sure we are at the bottom
}
else if (((pos.board[m & 0x3F] != PieceC.NO_PIECE) && !((m & (3 << 14)) == (3 << 14))) || ((m & (3 << 14)) == (2 << 14)))
{
ms[idx].score = Position.PieceValueMidgame[pos.board[(m & 0x3F)]] - (pos.board[((m >> 6) & 0x3F)] & 7) + History.MaxValue;
}
else
{
ms[idx].score = H.value(pos.board[((m >> 6) & 0x3F)], (m & 0x3F));
}
}
}
