Mixed strategy

A mixed strategy is what a solver returns when a single hand takes more than one action across the many times that exact spot comes up. Rather than betting or checking every time, part of the range's action on that hand class splits between two or more choices in a ratio the solver has judged necessary for balance.

The split describes the population of hands, not a single decision. Most hands inside a range play one action every time; only a smaller group genuinely mixes. Reading a mixed strategy well means asking why a spot mixes at all rather than treating the ratio as an instruction to roll a die at the table.

Worked example. Picture a hand of only middling strength on a coordinated board. Betting builds a pot for the times it improves and applies pressure now; checking keeps the hand cheap and avoids folding out equity when it faces a raise. Both have merit, so the solver has that hand class do both, keeping the check range and the bet range each protected rather than committing the hand fully to either plan.