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DroidFish: Updated stockfish engine to version 8.

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This commit is contained in:
Peter Osterlund
2016-11-01 19:40:58 +01:00
parent 503390c19f
commit 3d227b6bee
20 changed files with 282 additions and 273 deletions
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14
DroidFish/jni/stockfish/bitbase.cpp
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@@ -123,9 +123,9 @@ namespace {
// Immediate win if a pawn can be promoted without getting captured
else if ( us == WHITE
&& rank_of(psq) == RANK_7
&& ksq[us] != psq + DELTA_N
&& ( distance(ksq[~us], psq + DELTA_N) > 1
|| (StepAttacksBB[KING][ksq[us]] & (psq + DELTA_N))))
&& ksq[us] != psq + NORTH
&& ( distance(ksq[~us], psq + NORTH) > 1
|| (StepAttacksBB[KING][ksq[us]] & (psq + NORTH))))
result = WIN;
// Immediate draw if it is a stalemate or a king captures undefended pawn
@@ -166,12 +166,12 @@ namespace {
if (Us == WHITE)
{
if (rank_of(psq) < RANK_7) // Single push
r |= db[index(Them, ksq[Them], ksq[Us], psq + DELTA_N)];
r |= db[index(Them, ksq[Them], ksq[Us], psq + NORTH)];
if ( rank_of(psq) == RANK_2 // Double push
&& psq + DELTA_N != ksq[Us]
&& psq + DELTA_N != ksq[Them])
r |= db[index(Them, ksq[Them], ksq[Us], psq + DELTA_N + DELTA_N)];
&& psq + NORTH != ksq[Us]
&& psq + NORTH != ksq[Them])
r |= db[index(Them, ksq[Them], ksq[Us], psq + NORTH + NORTH)];
}
return result = r & Good ? Good : r & UNKNOWN ? UNKNOWN : Bad;