Postflopizer GTO Solver Update: Automatic Optimal Bet Sizes Finder

A new update to Postflopizer Postflop GTO Solver introduces advanced features that automate finding the optimal bet sizes, offering a significant improvement in strategy optimization and time efficiency.

The core of this update is the automatic bet size finder, which allows players to identify optimal bet sizes during the post-flop play. This enhancement is designed to minimize guesswork, improve decision-making, and maintain high expected value (EV) without sacrificing performance. Also by removing underutilized options we get smaller trees which means less memory required and faster calculation time.

The Problem of the Optimal Bet Discovery Simulation

There are generally two types of simulations:

Optimal Bets Discovery Sims - This type of calculation focuses on finding optimal bet sizes for a given board texture, player ranges, positions, and tournament situation. The bets discovery phase is crucial because if you do not know the right sizing to maximize the EV of your hands, you will lose a lot of value. Understanding bet size logic is crucial—different boards and positions (IP or OOP) lead to different preferable sizes.

If you know the correct bet size, but your opponent makes a strange bet size, you may immediately assume they are not a good post-flop player. However, if you don't know the right size, they might make this assumption about you.
GTO Strategy Analysis Sims - Once the optimal bets are discovered, we can focus on analyzing and learning the actual GTO strategy. These are more traditional simulations because they go deep into hand analysis. By analyzing these sims, we learn how to split our range with a mixed strategy of bets, raises, and checks on different runouts and in different kinds of bet sequences.

The traditional approach is to add many bet sizes hoping that one will be right. While this guarantees results, it leads to complex strategies with multiple betting options for the same hands.

Often, one bet size on the flop is enough to utilize the potential of the range for upcoming streets. However, there are exceptions where two sizes may show a gain over just one. Most players use strategies with five or more bet sizes because they rely on pre-calculated solutions that weren't curated to keep only relevant sizes. Now, Postflopizer can automatically curate simulations and save a lot of time.

The Solution: Automatic Bet Size Optimization

Postflopizer's Automatic Bet Size Option focuses on skipping the bet discovery phase, allowing players to jump into learning strategies without figuring out the right bet size. The update includes two new flop bet size options, "Auto 1" and "Auto 2":

Auto 1: Identifies one optimal bet size.
Auto 2: Finds up to two optimal bet sizes.

Postflopizer analyzes board structure, player positions, and ranges to suggest the most EV-maximizing sizes. For example, on a dry rainbow A85 board in a tournament situation, the solver determines that the out-of-position player's optimal bet is 100% of the pot, while the in-position player's best bet is 33% of the pot.

Should we remove the ICM pressure and run a cash simulation in the same situation, the preferred bet sizes go up to 125% and 50%, respectively.

Note that the automatic bet size finder is currently only available for the flop, which is the most important and frequent post-flop situation.

Optimal Bet Size Preset in Quick Mode

Quick mode focuses on players new to GTO solvers. The Optimal Preset automatically chooses one optimal bet size and can be accessed easily.

Simplifying Strategy While Maintaining EV

The automatic bet size feature streamlines strategy without losing EV. Players often make mistakes by using inappropriate bet sizes, such as placing a small bet when a larger one would extract more value. Postflopizer’s automatic bet size finder helps avoid this by ensuring the right size is chosen for each situation.

Even when players opt for a complex strategy with multiple sizes, the difference in EV compared to a simpler approach is minimal. Simplifying bet size options makes strategies easier to execute and prevents unnecessary complexity during in-game decisions. Postflopizer ensures essential EV is captured even with fewer bet sizes.

Enhanced Node Locking and Performance

This update also includes improvements to node-locking functionality, making it faster and more efficient. Node locking allows players to adjust the solver's assumptions about their opponent’s strategies. The solver now recalculates only the parts of the tree with the unlocked strategies, significantly reducing the time needed for adjustments. For turn and river locks, performance after this update is usually instantaneous.

User Interface and Usability Improvements

The update includes several usability enhancements:

Display Bets as % of the Pot: Users can now display bet sizes as percentages rather than raw values, which simplifies interpretation.
Display Stacks as BB: Players can display stack sizes in big blinds or chips, offering flexibility for tournament players.

Additionally, numerous bug fixes ensure smoother, more reliable performance across the software.

Conclusion

This latest update to Postflopizer GTO Solver represents a major advancement in optimizing post-flop play learning process. The automatic optimal bet size finder saves time, reduces the complexity of decision-making, and ensures that your GTO strategies are EV-efficient. With enhanced node-locking capabilities and additional interface improvements, Postflopzer has become a much more powerful and accessible tool for refining poker strategies.

Combine this with unmatched tournament analysis features and Postflopizer now is the most advanced standalone GTO Solver on the market.

These updates allow players to focus on execution rather than calculation, making Postflopizer an invaluable asset for anyone serious about improving their post-flop play.