/// a given square a (midgame, endgame) score pair is assigned. PSQT is defined
/// for white side, for black side the tables are symmetric.
-static const Score PSQT[][64] = {
+static const Score PSQT[][SQUARE_NB] = {
{ },
{ // Pawn
S( 0, 0), S( 0, 0), S( 0, 0), S( 0, 0), S(0, 0), S( 0, 0), S( 0, 0), S( 0, 0),