Crate shakmaty_syzygy
source ·Expand description
Probe Syzygy endgame tablebases.
Syzygy tables allow optimal play under the 50-move rule. Tables are available for positions with up to 7 pieces.
Example
use shakmaty::{CastlingMode, Chess, fen::Fen};
use shakmaty_syzygy::{Tablebase, MaybeRounded, Wdl, Dtz, Syzygy};
let mut tables = Tablebase::new();
tables.add_directory("tables/chess")?;
let pos: Chess = "8/8/8/8/B7/N7/K2k4/8 b - - 0 1"
.parse::<Fen>()?
.into_position(CastlingMode::Standard)?;
let wdl = tables.probe_wdl_after_zeroing(&pos)?;
assert_eq!(wdl, Wdl::Loss);
let dtz = tables.probe_dtz(&pos)?;
assert!(matches!(dtz, MaybeRounded::Rounded(Dtz(-59))));
Errors
See SyzygyError
for possible error
conditions.
Cargo features
variant
: Enables support for Antichess and Atomic chess.
Structs
DTZ50′′. Based on the distance to zeroing of the
half-move clock.
A material key.
File extension and magic header bytes of Syzygy tables.
A collection of tables.
Enums
WDL50 with ambiguity due to DTZ rounding.
A value that may be affected by DTZ rounding.
Metric stored in a table: WDL or DTZ.
Error when probing a table.
Error when probing tablebase.
WDL50. 5-valued evaluation of a position in the context of the
50-move drawing rule.
Traits
A chess variant with Syzygy support.