We used to play connect 4 like this in high school, it’s frustratingly difficult to remember the game state but it’s easy to play (you just call out the column)

We used to play connect 4 like this in high school, it’s frustratingly difficult to remember the game state but it’s easy to play (you just call out the column). You can easily forget the board position if you think too long about a move and as the game progresses it becomes more difficult to keep track of the game state. But it’s a lot of fun, I can imagine it becomes a lot easier over time especially when they are so experienced in chess.