Because it's like each round grows exponentially in size. So, the first two rounds are actually pretty small. We got to the end of the second betting round, that's when we applied Subgame Solving. So, we came up with a much better strategy for the remainder of the game. We abstracted the bets. So, we want to consider all the 20,000 different bet sizes, we would just consider a small fraction of them. Then each time the opponent acted, each time they've made a bet, then we would solve a new subgame for that bet size.