From: H.G.Muller <hgm@hgm-xboard.(none)>
Date: Tue, 7 Feb 2017 21:39:47 +0000 (+0100)
Subject: Suppress hash cutoffs in root
X-Git-Url: http://winboard.nl/cgi-bin?a=commitdiff_plain;h=1d8d788fd97aee3961bf3174cb458f413aa70882;p=crazywa.git

Suppress hash cutoffs in root
---

diff --git a/dropper.c b/dropper.c
index 9081a17..ca80815 100644
--- a/dropper.c
+++ b/dropper.c
@@ -1144,7 +1144,7 @@ if(PATH)printf("%d:%d   Hash Probe %016llx\n",ply,depth,f.hashKey);
 if(PATH)printf("      Hit, d=%d, checker = %x\n",entry->depth,f.checker);
 	if((entry->flags & H_LOWER || entry->score <= alpha) && (entry->flags & H_UPPER || entry->score >= beta)) { // compatible bound
 	    d += (score >= beta & entry->depth >= LMR)*reduction; // fail highs need to satisfy reduced depth only, so we fake higher depth than actually found
-	    if(score > alpha && d >= depth || d >= maxDepth) { // sufficient depth
+	    if((score > alpha && d >= depth || d >= maxDepth) && ply) { // sufficient depth
 		ff->depth = d + 1; return entry->score; // depth was sufficient, take hash cutoff
 	    }
 	}