Release v0.4.2-rc.2 · aywrite/arche

(search) Record every reverse futility candidate, fired or not [bench 8182450]
(search) Add principal variation search [bench 7184673]
(search) Skip hopeless captures in quiescence [bench 6708286] [elo +50 ±24 (sprt [0, 10] passed, 530 games, 10+0.1, vs 24ef995)]
(search) Add static exchange evaluation [bench 6708286]
(search) Order captures by static exchange evaluation [bench 6146070] [elo +12 ±18 (sprt [-10, 0] inconclusive, 840 games, 10+0.1, vs master)]
(search) Skip losing captures in quiescence [bench 5684750] [elo +24 ±19 (sprt [-10, 0] passed, 746 games, 10+0.1, vs 6e6fdec)]
(search) Reduce late quiet moves by one ply [bench 4395471] [elo +44 ±22 (sprt [0, 10] passed, 648 games, 10+0.1, vs 899197c)]
(board) Tell whether a move gives check without making it [bench 4395471]

(board) Drop a castle right or en passant square without its pieces [bench 4395471]
(uci) Take startpos, fen and moves as whole words

(search) Score the quiet moves only when the search reaches them [bench 6146018] [speed +3.4%]
(board) Mask the castling rights, step the repetition walk in twos [bench 4395471] [speed +3.5%]
(search) Sort the keys and put the moves in order once [bench 4395471] [speed +2.1%]
(search) Sort only the keys the move ordering scored [bench 4395471] [speed +6.4%]
(search) Mask the squares the history table is read by [bench 4395471] [speed -0.9%]

(search) Leave the swap's gain array uninitialised [bench 5684750]
(board) Make Board's active_color, line_ply and key pub(crate) [bench 4395471]
(board) Add try_make and try_undo for callers outside the crate [bench 4395471]
(magic) Move the mailbox and the MAGIC static into magic.rs [bench 4395471]
(uci) Read a go line once into a Go value
(uci) Answer the three research commands through one path
(board) Write the castling rights out from a table [bench 4395471]
(uci) Move the instruments out of the protocol module

(bench) Let the residuals command set the reservoir cap
(bench) Score the terminal positions the replay reaches
(docs) Correct three verdicts in the experiments ledger
(docs) Record that on-demand move picking measured slower
(bench) Count the rows whose claim overstates the reference
(docs) Record the tuning that measured slower
(ci) Count how the games in a match ended
(ci) Keep the games and a manifest from every strength run
(bench) Record which move cuts a sampled node off [bench 4395471]
(deps) Bump the actions group with 2 updates
(docs) Record the check exemption verdict
(ci) Pool the shards of a match into one estimate
(ci) Give each shard of a match its own slice of the book
(ci) Split the strength match across shards
(bench) Label each sampled reduced scout's fail low [bench 4395471]
(magic) Import the test module's names in one use
(ci) Play the calibrate rungs at the same time
(workspace) Drop or fix the checks that were already being made
(workspace) Clean up the docs, the comments and the test scaffolding [bench 4395471]
(docs) Record the tuning this round measured slower
(workspace) Hold the unsafe to the two crates that need it
(workspace) Look for the licence notice everywhere a source file is
(ci) Read a match's pairs as a sequential test
(ci) Play an sprt in batches across the shards
(docs) Correct and tidy the documentation

Docker image: ghcr.io/aywrite/arche-lichess-bot:v0.4.2-rc.2 (sha256:e67c453bc987f9768ab02db820e66862fec23ff6b970d6b4e607da372c9cac5c)

Performance compared to v0.4.1 | +127 ±26 Elo (500 games)

Estimated rating | 2326 ±35 on the ccrl blitz scale (104 games)

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