diff options
| 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 /README.md | |
| 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 'README.md')
| -rw-r--r-- | README.md | 2 |
1 files changed, 2 insertions, 0 deletions
@@ -16,6 +16,8 @@ and diagonals run through every other point (those where x + y is even). - Sheep move first, then the sides take turns. - **Tigers win** by killing 5 sheep. **Either side wins** if the other has no legal move on its turn, so sheep win by trapping every tiger. +- **Draw:** the game is drawn when the same position, with the same side to move, comes up for the + third time, as in chess. ## Running |