MaxfieldLewin / postflop-solver

An open-source postflop solver written in Rust

postflop-solver

An open-source postflop solver written in Rust

Web interface repository: https://github.com/b-inary/wasm-postflop

Usage

Cargo.toml

[dependencies]
postflop-solver = { git = "https://github.com/b-inary/postflop-solver" }

example.rs

use postflop_solver::*;

// configure game specification
let oop_range = "22+,A2s+,A8o+,K7s+,K9o+,Q8s+,Q9o+,J8s+,J9o+,T8+,97+,86+,75+,64s+,65o,54,43s";
let ip_range = "22+,A4s+,A9o+,K9s+,KTo+,Q9s+,QTo+,J9+,T9,98s,87s,76s,65s";
let bet_sizes = BetSizeCandidates::try_from(("50%", "50%")).unwrap();
let config = GameConfig {
    flop: flop_from_str("Td9d6h").unwrap(),
    starting_pot: 180,
    effective_stack: 910,
    range: [oop_range.parse().unwrap(), ip_range.parse().unwrap()],
    flop_bet_sizes: [bet_sizes.clone(), bet_sizes.clone()],
    turn_bet_sizes: [bet_sizes.clone(), bet_sizes.clone()],
    river_bet_sizes: [bet_sizes.clone(), bet_sizes.clone()],
    ..Default::default()
};

// build game tree
let mut game = PostFlopGame::with_config(&config).unwrap();

// check memory usage
let (mem_usage, mem_usage_compressed) = game.memory_usage();
println!(
    "memory usage without compression: {:.2}GB",
    mem_usage as f64 / (1024.0 * 1024.0 * 1024.0)
);
println!(
    "memory usage with compression: {:.2}GB",
    mem_usage_compressed as f64 / (1024.0 * 1024.0 * 1024.0)
);

// allocate memory without compression
game.allocate_memory(false);

// allocate memory with compression
// game.allocate_memory(true);

// solve game
let max_num_iterations = 1000;
let target_exploitability = config.starting_pot as f32 * 0.005;
let exploitability = solve(&game, max_num_iterations, target_exploitability, true);

// compute OOP's EV and equity
compute_ev_and_equity(&game);
let bias = config.starting_pot as f32 * 0.5;
let ev = get_root_ev(&game) + bias;
let equity = get_root_equity(&game) + 0.5;

License

Copyright (C) 2022 Wataru Inariba

This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public License along with this program. If not, see https://www.gnu.org/licenses/.