stoppers = theirPawns & passed_pawn_mask(Us, s);
lever = theirPawns & pawnAttacksBB[s];
leverPush = theirPawns & pawnAttacksBB[s + Up];
- doubled = ourPawns & (s + Up);
+ doubled = ourPawns & (s - Up);
neighbours = ourPawns & adjacent_files_bb(f);
phalanx = neighbours & rank_bb(s);
supported = neighbours & rank_bb(s - Up);
if (connected)
score += Connected[opposed][!!phalanx][more_than_one(supported)][relative_rank(Us, s)];
- if (doubled)
- score -= Doubled;
+ if (doubled && !supported)
+ score -= Doubled;
if (lever)
score += Lever[relative_rank(Us, s)];