diff options
| author | Scott Gasch <[email protected]> | 2026-10-24 09:07:03 -0700 |
|---|---|---|
| committer | Scott Gasch <[email protected]> | 2026-10-24 09:07:03 -0700 |
| commit | 5f901d737b17c5f99b6e456d6c0c7d5e3c093dc4 (patch) | |
| tree | 6601dadbd36c8f45991c5dd821a3dbb2059baafe /src/search.c | |
| parent | 69525eb2f42ea9cca8255f6cc3b85e6b1312fd05 (diff) | |
More aggressive move reductions; Wilson bound overrides static signal when available
SPRT playtest (2000 games, sd/depth matched): -535 =875 +590, score=0.514,
llr=+1.04 (floated around +1.0 the whole run, never went negative) toward
H1=+2.94. Not a confirmed win, but searches meaningfully deeper (avg depth
14.35 vs 13.50, EBF 3.131 vs 3.305) at no measurable strength cost -- worth
banking and continuing to accumulate games against.
Co-Authored-By: Claude Sonnet 5 <[email protected]>
Diffstat (limited to 'src/search.c')
| -rw-r--r-- | src/search.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/search.c b/src/search.c index c054333..a347e12 100644 --- a/src/search.c +++ b/src/search.c @@ -511,6 +511,10 @@ Search(IN SEARCHER_THREAD_CONTEXT *ctx, &mvHash, &iScore, &sHash); + // 2026-10-23, one-off diagnostic support -- see PLY_INFO's + // fHashMoveIsCapture comment (chess.h). mvHash is never reassigned + // below this point, so it's final the instant HashLookup returns. + pi->fHashMoveIsCapture = (0 != mvHash.uMove) && IS_CAPTURE_OR_PROMOTION(mvHash); if (TRUE == fHashHit) { VERIFY_HASH_HIT; @@ -1220,6 +1224,11 @@ Search(IN SEARCHER_THREAD_CONTEXT *ctx, if (TRUE == fIsLeftoverMove) { INC(ctx->sCounters.tree.u64LeftoverFH); +#ifdef HASHCAP_COLLECTION + INC(ctx->sCounters.tree.u64HashCapFH + [pi->fHashMoveIsCapture ? 1 : 0] + [(NODE_CUT == pi->eNodeType) ? 1 : 0]); +#endif // Gated on fMoveIsPruneReduceEligible now, // matching the tries side -- must // match exactly, or this would reuse a |