From: H.G.Muller <hgm@hgm-xboard.(none)>
Date: Wed, 22 Oct 2014 12:18:01 +0000 (+0200)
Subject: Fix detection of bare Kings
X-Git-Url: http://winboard.nl/cgi-bin?p=fairymax.git;a=commitdiff_plain;h=02070fe355b038a82658d9aab5779ee62f5dea70

Fix detection of bare Kings

The black King was already considered bare wihen black had still 3 pieces,
and null move was always switched off, even if no King was bare.
---

diff --git a/fairymax.c b/fairymax.c
index 0e22af6..bfe1f2a 100644
--- a/fairymax.c
+++ b/fairymax.c
@@ -589,8 +589,8 @@ int main(int argc, char **argv)
                         if(tlim>TimeLeft/15) tlim = TimeLeft/15;
                         PromPiece = 0; /* Always promote to Queen ourselves */
                         for(N=K=0;K<S;K++)N+=b[K]?b[K]&16?S:1:0; /* count pieces for detecting bare King */
-                        if(w[3]<0&w[4]<0){if(N>>8<2)centr[4]=5;if(!(N&S-2))centr[3]=5;Z+=R>4;R=4;}
-printf("# %d+%d pieces, centr = (%d,%d)\n", N&63, N>>7, centr[3], centr[4]);
+                        if(w[3]<0&w[4]<0){if(N<2*S)centr[4]=5,Z+=R>4,R=4;if(!(N&S-2))centr[3]=5,Z+=R>4,R=4;}
+printf("# %d+%d pieces, centr = (%d,%d) R=%d\n", N&63, N>>7, centr[3], centr[4], R);
                         N=0;K=I;
                         if(hill) centr[3] = R>20 ? 1 : 22-R;
                         if (D(Side,-I,I,Q,O,LL|S,3)==I) {