hasInsufficientMaterial method

@override bool hasInsufficientMaterial(Side side)

Tests if a Side has insufficient winning material.

Implementation

@override
bool hasInsufficientMaterial(Side side) {
  if (pockets == null) {
    return super.hasInsufficientMaterial(side);
  }
  return board.occupied.size + pockets!.size <= 3 &&
      board.pawns.isEmpty &&
      board.promoted.isEmpty &&
      board.rooksAndQueens.isEmpty &&
      pockets!.count(Role.pawn) <= 0 &&
      pockets!.count(Role.rook) <= 0 &&
      pockets!.count(Role.queen) <= 0;
}