Introduction
Cyber Battle Game
Game elements
Main Game Loop
Robot moves
Instruction
Well done! The third helper function checks if a given field is empty.
Exercise
Write an is_empty(board, row, column) function. This checks if the field indicated by that row and column is empty, i.e. whether it equals '-'. It should return either True or False.
Stuck? Here's a hint!
Simply check if
board[row][column] == '-'
