- lever = theirPawns & pawnAttacksBB[s];
- leverPush = theirPawns & pawnAttacksBB[s + Up];
- doubled = ourPawns & (s + Up);
+ lever = theirPawns & PawnAttacks[Us][s];
+ leverPush = theirPawns & PawnAttacks[Us][s + Up];
+ doubled = ourPawns & (s - Up);