Player A can avoid having to make an expected payment of more than by choosing A1 with probability and A2 with probability The expected payoff for A would be in case B chose B1 and in case B chose B2. Similarly, B can ensure an expected gain of at least , no matter what A chooses, by using a randomized strategy of choosing B1 with probability and B2 with probability . These mixed minimax strategies cannot be improved and are now stable.
Player A can avoid having to make an expected payment of more than by choosing A1 with probability and A2 with probability The expected payoff for A would be in case B chose B1 and in case B chose B2. Similarly B can ensure an expected gain of at least , no matter what A chooses, by using a randomized strategy of choosing B1 with probability and B2 with probability . These mixed minimax strategies cannot be improved and are now stable.