- // Unsupported pawn penalty, for pawns which are neither isolated or backward
- const Score Unsupported = S(20, 10);
+ // Unsupported pawn penalty for pawns which are neither isolated or backward,
+ // by number of pawns it supports [less than 2 / exactly 2].
+ const Score Unsupported[2] = { S(20, 10), S(25, 15) };