Why some EV comparisons are missing

When the Analyse tab grades an imported hand, megamaster prices the decision you actually faced: it finds your exact two cards in the exact spot and shows what every action available to you was worth. On some boards it can do that for your river decisions but not your flop and turn ones, and it says so rather than leaving a blank. This page explains what that depends on.

The short version

A solved board is an enormous object — the river alone is about 99% of it. Shipping the whole thing per board would make the library undownloadable, so saves are trimmed: the flop and turn are kept in full, and the river is dropped and re-solved on demand when you open a river node.

Pricing a river decision only needs that one river, so it always works. Pricing a flop or turn decision is different: what a turn bet is worth depends on how every river plays out afterwards. That number has to be measured while the full solve is still in memory and saved alongside the trim. Boards solved from 21 September 2026 onward carry it. Boards solved before that do not, and there is no way to recover it from what was kept — the only fix is to solve the board again.

What still works on an older board

The missing piece is one number on two streets. Everything else is unaffected:

• River decisions are fully priced — every action, for your exact hand, with the EV cost of the one you chose.
• Strategy and frequency at every flop and turn node: what the solver does with your hand, how often, and with what part of its range.
• The Lines map, priced rules, texture buckets and drills, none of which depend on per-hand flop EV.
• Your hand's class and the pool's response, which is often the more useful read on a flop decision anyway — whether a bet is a mistake matters less than whether you are betting a class the pool over-folds against.

Why we did not re-solve everything

Re-solving the existing library would cost about as much compute as producing it did, for one number on two streets. Instead the library has grown from 418 representative flops per spot toward the full 1,755, and every board solved since carries flop and turn pricing. The boards solved before that were kept as they were, so they still price river decisions only.

One consequence worth knowing: a template can be mixed. Its newer boards price flop and turn decisions while its older ones do not, so two hands on two different flops in the same spot can get different answers. The app tells you which you are looking at; it never silently substitutes a weaker number for a stronger one.

How to tell

Where a decision cannot be priced, the analyser marks it no price rather than showing a zero or an empty cell; hover it for the reason. The replayer's grades use the same mark, and the Analyse tab's help link leads here. In the trainer, the line above the table says per board whether its flop and turn are EV-graded; where they are not, those decisions are graded by frequency and their bb figure reads —. A board that can price everything shows no marker at all.

Related: Solver accuracy for the targets behind these numbers, and Solving hands if you would rather solve a specific hand's board yourself.