code: function canMove(game, move) {
      if (!Game.isMyTurn(game, move.from))
          return false;
      const positionsWhereCanIGo = Board.getPositionsWhereCanIGo(game.board, move.from);
      return positionsWhereCanIGo.some(position => Position.hasSameXY(position, move.to));
  }
docs: Takes game and move then:
  - Checks if it is my turn to play otherwise returns false.
  - Get positions where can i go.
  - Returns true if move.to is in the positions where can i go.