From: H.G.Muller <hgm@hgm-xboard.(none)>
Date: Wed, 8 Oct 2014 06:56:21 +0000 (+0200)
Subject: Repair Seirawan gating
X-Git-Url: http://winboard.nl/cgi-bin?p=fairymax.git;a=commitdiff_plain;h=88dc8e222151bd89a99815735189eab5454f0aad;hp=8a9e2bafa07b7115090b63e45864efe930d4d88e

Repair Seirawan gating

The overhaul of promotion code had forgotton to strip off the virginity
and color bits of the gated piece (gt) when assigning it to the promotion
piece type. With as a result that garbage characters were printed as
promotion suffix in gating moves.
---

diff --git a/fairymax.c b/fairymax.c
index 470c03a..5ec3380 100644
--- a/fairymax.c
+++ b/fairymax.c
@@ -231,7 +231,7 @@ int k,q,l,e,E,z,n;      /* (q,l)=window, e=current eval. score, E=e.p. sqr.*/
         }
         if(z&S&&K-I)                           /* move pending: check legal*/
         {if(v+I&&x==K&y==L&gt==GT)             /*   if move found          */
-         {Q=-e-i;O=F;LL=L;prom=gt;
+         {Q=-e-i;O=F;LL=L;prom=gt&15;
           if(b[y]-u&15)prom=b[y]-=PromPiece,   /* (under-)promotion:       */
            Q-=abs(w[prom&=15])-w[p]-(6*S>>sh), /*  correct piece & score & */
                        Z+=PromPiece;           /*  invalidate hash         */
@@ -587,6 +587,7 @@ int main(int argc, char **argv)
                             m = GetTickCount() - Ticks;
                             printf("# times @ %u: real=%d cpu=%1.0f\n", m + Ticks, m,
                                       (CPUtime() - cpuT)/CLOCKS_PER_SEC);
+printf("promo = %d (%c) GT = %d\n", prom, prom + '`', GT); 
                             printf("move ");
                             printf("%c%c%c%c",'a'+(K&15),'0'+BH-(K>>4),
                                           'a'+(L&15),'0'+BH-(L>>4));