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| author | Dylan <boss@tehbox.org> | 2026-11-09 16:17:04 +1300 |
|---|---|---|
| committer | Dylan <boss@tehbox.org> | 2026-11-09 16:17:04 +1300 |
| commit | 0fd43eb6d9a4bae8d4c29fd614f9cf2a362f7b7c (patch) | |
| tree | eb926ba3fbc0dcde9717509e9fa02cc79a3679f9 /src/neural-player.rs | |
| parent | 046969c820e89b74d55c2d07c47470237f11cc2a (diff) | |
| download | tigers-and-sheep-0fd43eb6d9a4bae8d4c29fd614f9cf2a362f7b7c.tar.gz tigers-and-sheep-0fd43eb6d9a4bae8d4c29fd614f9cf2a362f7b7c.zip | |
feat: Draw by threefold repetition
A position coming up for the third time with the same side to move ends
the game as a draw, in the TUI and in training self-play. Players now get
the game's earlier boards in pick_move, and the search scores the first
repetition on its path as a draw, so a side that is ahead avoids one and
a side that is behind seeks one.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Diffstat (limited to 'src/neural-player.rs')
| -rw-r--r-- | src/neural-player.rs | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/neural-player.rs b/src/neural-player.rs index 3a9c4a0..f7e54c7 100644 --- a/src/neural-player.rs +++ b/src/neural-player.rs @@ -59,10 +59,10 @@ mod tests let mut player = NeuralPlayer::new(Network::random(2), Duration::from_secs(3600), 12); player.max_depth = 3; let board = GameBoard::default(); - let m = player.pick_move(board, Turn::Sheep).unwrap(); + let m = player.pick_move(board, Turn::Sheep, &[]).unwrap(); assert_eq!(board.check_move(m), Ok(())); let report = player.last_search.expect("a report"); assert_eq!((report.mv, report.depth), (m, 3)); - assert_eq!(report.score, player.minimax(board, Turn::Sheep, 3, f32::NEG_INFINITY, f32::INFINITY, None).unwrap()); + assert_eq!(report.score, player.minimax(board, Turn::Sheep, 3, f32::NEG_INFINITY, f32::INFINITY, None, &mut Vec::new()).unwrap()); } } |