From 936017bbd15f39ed8b2de0dac1fb59058637b552 Mon Sep 17 00:00:00 2001 From: Claude Date: Sun, 11 Oct 2026 00:13:01 +0000 Subject: [PATCH] docs(docs): List multi-cut, the attention refits and the quiet tie break as rejected Four arms measured since the last entries were written, none of them in the roadmap's rejected list: multi-cut at a singular test node, two refits of the late move pruning skip as a logistic model (one with a free depth weight, one with depth on the margin's line), and ordering the zero scored quiets by their evaluation change. Each entry carries its match figures. Co-Authored-By: Claude Opus 5.5 Claude-Session: https://claude.ai/code/session_01A57SbXV3vACDuNUX5zSKPQ --- docs/ROADMAP.md | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/docs/ROADMAP.md b/docs/ROADMAP.md index 00b50772..c751579a 100644 --- a/docs/ROADMAP.md +++ b/docs/ROADMAP.md @@ -668,3 +668,26 @@ of these again without saying what is different this time. the share. -7 ±11 over 2,000 games at 10+0.1 against 621ecab (sprt [0, 10] failed at LLR -3.79). The candidate ended 436 ms ahead on the clock and spent 0.624 of its share against 0.692, so the time it banked was never spent. +- Multi-cut at a singular test node: when the search with the table move excluded comes + back at or over a window that is itself at or over beta, answer that window as a fail + high without searching the table move. It fired on 17.3% of the bench's eligible nodes + and 1.6% of the games suite's, and read +2 ±21 over 300 pairs at 200,000 nodes a move. + The match against 048dfa7 capped unresolved at +5 ±7 over 4,000 games at 10+0.1 (sprt + [0, 10], LLR 0.09). +- Refitting the late move pruning skip as a logistic model over the move as well as the + node, in place of the evaluation's margin under beta: history kept signed rather than + clamped at zero, the window's width, the index bands, the killer and the table word, + with the threshold matched to the margin's skip count. Fitted on a million rows from + 10,000 game positions, it skipped 37 moves that mattered on the held out half against + the margin's 47, and lost -15 ±15 over 1,000 games at 10+0.1 against 93e5b1b (sprt + [0, 10] failed at LLR -3.08). Its depth weight, fitted on rows nearly all at depths four + to six, made the skip more aggressive with depth where the margin grows more cautious. + With depth entering only through the margin's own line, the same features lost + -9 ±12 over 1,500 games (LLR -3.48) while skipping within half a percent of the + margin's count at every depth. The per move features are worth nothing measurable over + the margin. +- Ordering the quiet moves the killers and the history score at zero by their change to + the evaluation, largest first, rather than in generated order. With the piece square + and pair term change, -4 ±9 over 3,000 games at 10+0.1 against 2d7fe54 (sprt [0, 10] + failed at LLR -4.58), at 0.945 to 0.961 times master's nodes a second; with the piece + square change alone, -6 ±9 over 2,500 games (LLR -4.76).