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caa3bc454c
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tune: completely disable contempt by default
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2024-12-26 15:27:00 -05:00 |
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68d3d7e6d9
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tune: further reduce default contempt factor
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2024-12-26 14:59:16 -05:00 |
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089b7b305c
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tune: reduce contempt
contempt factor as of last commit loses some games
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2024-12-26 13:40:47 -05:00 |
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3fe4b8c196
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feat: contempt factor
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2024-12-26 11:18:48 -05:00 |
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d93fc0ecb0
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tune: increase history size
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2024-12-25 22:20:13 -05:00 |
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b05d6ed46f
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tune: re-add some value to pawns in endgame PST
pawns on the 7th rank are _probably_ passed pawns
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2024-12-25 21:35:49 -05:00 |
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093dc51eed
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tune: make only three repetitions (not two) evaluate as draw
this commit might fix some positions being evaluated as zero
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2024-12-25 20:08:32 -05:00 |
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e06d614885
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tune: only push history for real moves
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2024-12-25 17:31:32 -05:00 |
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955c9f1f5e
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fix: do not play a nullmove in a drawn position
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2024-12-25 16:42:58 -05:00 |
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cac74a46cd
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tune: reduce board history size
seemingly avoiding repetition performs worse as of last commit.
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2024-12-25 16:15:37 -05:00 |
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db365c124e
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feat: detect draw by repetition
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2024-12-25 15:05:41 -05:00 |
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a6a7b33553
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docs: update readme feature list
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2024-12-25 12:22:25 -05:00 |
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8137cbc2fe
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tune: increase max depths for search
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2024-12-25 12:06:37 -05:00 |
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ffc2671c4a
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tune: PST for pawns in endgame
seemingly setting their value too high makes the engine believe it can
sacrifice material to push non-passed pawns
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2024-12-24 20:11:43 -05:00 |
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9327b73dc0
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feat: eval command now offers more information
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2024-12-24 20:11:33 -05:00 |
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0120c95097
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feat: stand-pat on quiescence search
gotta remember that not capturing is an option too
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2024-12-24 16:46:47 -05:00 |
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54a4cd07ac
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test: SEE in a real position
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2024-12-24 15:39:56 -05:00 |
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ab7ce6b6a2
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tune: revert "tune: quiescence depth increased"
This reverts commit 5a9e17804c.
tests seem to show this is bad compared to before this commit
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2024-12-24 13:48:30 -05:00 |
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2569e36a5a
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feat: make tournament script use git tags instead of branches
this makes more sense and is more convenient (branches can only be
checked out in one worktree)
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2024-12-24 12:21:28 -05:00 |
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5a9e17804c
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tune: quiescence depth increased
4cb2cca doesn't seem to have any difference positive or negative in the
5+0 time control, so try this instead
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2024-12-24 12:04:53 -05:00 |
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4cb2cca02b
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tune: quiescence
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2024-12-24 11:27:48 -05:00 |
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795c2c508d
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feat: quiescence search
examines all captures using the new movegen, plus static exchange eval
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2024-12-23 21:28:04 -05:00 |
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cc40fb9a31
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feat: capture-only movegen
also refactored movegen internally
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2024-12-23 21:17:33 -05:00 |
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a36f394b99
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stub: static exchange evaluation
not yet used, but will be useful hopefully
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2024-12-22 16:34:04 -05:00 |
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1d651de4a0
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feat: scripts for automated chess tournaments and analysis
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2024-12-21 23:55:58 -05:00 |
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4ee30bd278
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feat: recapture extension
"quiescence" search
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2024-12-20 22:50:35 -05:00 |
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86e5780f26
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tune: pst
- avoid bongcloud
- avoid knight on edge
- avoid f-g-h pawns moving
- avoid bishop to g5/b5
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2024-12-20 16:55:38 -05:00 |
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b0a662460a
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feat: better move ordering
use transposition table as the primary heuristic
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2024-12-20 16:25:03 -05:00 |
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68afcb232c
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feat: transposition table node types
engine seemingly faster now, so allow longer soft limit (as a treat)
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2024-12-20 16:01:05 -05:00 |
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ab1dfb3aa1
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tune: time limits for games longer than 5'
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2024-12-20 14:59:18 -05:00 |
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e44cc0586e
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feat: soft/hard time limit
achieved by refactoring engine/main/stdin into three separate threads.
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2024-12-20 13:25:37 -05:00 |
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6be00e642e
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refactor: use EngineState to structure data in the engine
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2024-12-18 23:52:39 -05:00 |
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1843c5c4c6
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build: update msrv to 1.83 and remove beta compiler
const &mut was stabilized.
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2024-12-06 19:58:44 -05:00 |
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ae3a23c61f
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tune: timing and pst
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2024-11-24 14:59:40 -05:00 |
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b9819a52e6
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tune: pst and transposition table
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2024-11-23 22:39:39 -05:00 |
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f415a9148c
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fix: wrong logic on skepticism
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2024-11-23 21:37:19 -05:00 |
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c494230706
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feat: skepticism
garbage mitigation for the horizon problem
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2024-11-23 21:17:20 -05:00 |
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e8cb125df9
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tune: piece square tables
make it not be as crazy
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2024-11-23 20:15:39 -05:00 |
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3dcd27013d
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feat: transposition table can now directly decide move
it's no longer just a suggestion
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2024-11-23 19:13:02 -05:00 |
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e79f19942e
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perf: zobrist table no longer compares hash before overwrites
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2024-11-23 18:51:49 -05:00 |
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8895770da6
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chore: fmt
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2024-11-23 18:43:36 -05:00 |
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af18600d15
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refactor: move to main.rs file and add prelude
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2024-11-23 18:42:36 -05:00 |
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5ef46b3e7a
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feat: basic time management
this commit is full of tech debt. but the engine can flag now
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2024-11-20 12:19:09 -05:00 |
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8075e19bee
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feat: basic transposition table
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2024-11-17 14:02:47 -05:00 |
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6b672f83dc
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feat: perft zobrist cache
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2024-11-17 13:07:44 -05:00 |
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36753f6ecb
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refactor: random
uses a rust 1.83 feature so that the const fn works better
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2024-11-17 10:19:05 -05:00 |
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71594051f5
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chore: fix warnings
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2024-11-16 21:56:53 -05:00 |
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4ca186b67e
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chore: fmt
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2024-11-16 21:55:56 -05:00 |
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7c55400fbf
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fix: random doctest
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2024-11-16 21:54:03 -05:00 |
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987ec7656f
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fix: alpha-beta test
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2024-11-16 21:53:32 -05:00 |
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