Hi, I'm Oleg Ostroumov.
I've built private mixed-game solvers for players like Jungleman and Trueteller.
Now I'm building Zeno: a Holdem and PLO solver for everyone. It's in beta, free to try, and I'm actively developing it, as of October 2026.
Where it is today:
I'd love to hear what you think, and what would make Zeno useful for you: email / Telegram
Real-time recording of the live site: Holdem 6-max 100bb, button vs big blind, flop Q♠ 9♥ 4♦, 4 bet sizes.
When players fold before the flop, their hands are not random, so the remaining deck contains more high cards on average. This is called bunching effect.
Zeno can solve a flop both with and without bunching effect, and you can compare solutions side-by-side.
In 6-max, not accounting for bunching effect introduces 1-1.5% pot exploitability.
9-max, button vs big blind 3-bet pot, 6♦ 5♦ 2♣. With seven players folded, the 3-bettor c-bets more on low boards: 39 % → 44 % of its range.
You can lock an action frequency averaged over every river card, for example “IP does 3rd barrel with 85% probability across all rivers”. In the clip, Zeno re-solves in 2.8 s and hits the 85% target exactly.
Button vs big blind, K♠ 7♦ 2♣ 6♥, the button's third barrel: River report → lock icon → 85 % → Lock + re-solve.
View the strategy on all rivers at once.
Holdem 6-max 100bb, J♥ 9♥ 4♣ 2♠: every river at once.
Play against the solver. See solver frequencies and EV loss for each action. See the strategy at that spot in one click.
A mistake on the flop: an all-in with jacks that the solver never makes, −1.15 bb.