From 9d19918e96045806e0ce8269409f56cc78135201 Mon Sep 17 00:00:00 2001 From: H.G.Muller Date: Mon, 15 May 2017 15:10:33 +0200 Subject: [PATCH] Don't randomize mate scores The randomization is supposed to be an amount in centi-Pawns, and applying it to mate distance can prevent finding the mate. --- dropper.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/dropper.c b/dropper.c index 78b97cc..e421cba 100644 --- a/dropper.c +++ b/dropper.c @@ -1363,7 +1363,8 @@ if(PATH)printf("%d:%d:%d new iter moveStack[%d..%d]\n",ply,depth,iterDepth,m.fir repKey[index] = (int)f.newKey & 0x1FFFFF | f.newEval << 21; repDep[index] = ply + moveNr; // remember position // recursion deprec[ply] = (f.checker != CK_NONE ? f.checker : 0)<<24 | maxDepth<<16 | depth<< 8 | iterDepth; path[ply++] = moveStack[curMove]; - score = ran - Search(stm, -beta, -alpha+ran, &f, iterDepth-1, lmr, highDepth); + score = -Search(stm, -beta, -alpha+ran, &f, iterDepth-1, lmr, highDepth); + if(ran && score < INF-100 && score > 100-INF) score += ran; ply--; repKey[index] = oldRepKey; repDep[index] = oldRepDep; -- 1.7.0.4