Solver flops

Flop decisions in a solved heads-up spot, such as button versus big blind, graded by EV against a solved strategy.

Last updated October 16, 2026

What it means: Each spot is one preflop matchup: button versus big blind at 100, 40 and 25bb, cutoff versus big blind, small blind versus big blind, and a button versus big blind 3-bet pot. In the default spot the button opens to 2.5bb and the big blind calls. A postflop solver has worked out an equilibrium strategy for every hand on a set of representative flops, including how often each hand checks, bets, calls, raises or folds and what each action is worth.
How it is calculated: Your hand is dealt from the range that would reach the spot: the preflop range, times how often that hand took your earlier actions on this flop. Your answer is graded by EV loss: the best action's EV minus your action's EV, as a share of the pot, using the same thresholds as every other drill.
Worked example: The big blind checks and you hold a weak ace on the button. Suppose the solver bets small 70% of the time and checks 30%, and both are worth about 3.1bb. Either answer is Best. Betting big is worth 2.6bb, a loss of 0.5bb in a 5.5bb pot, or 9%.
Why it matters: Flop play is where most postflop EV is won or lost, and it cannot be priced by pot odds alone. The solver's EVs show which mistakes are costly and which choices are close. The turn and river are solved coarsely, so treat the answers as a strong guide, not an exact figure.