Fix under-promotion hash mixup

[fairymax.git] / fairymax.c

diff --git a/fairymax.c b/fairymax.c
index ba9672f..c68ca20 100644 (file)
--- a/fairymax.c
+++ b/fairymax.c
@@ -18,7 +18,7 @@
      /*****************************************************************/\r
 \r
 #define MULTIPATH\r
-#define VERSION "4.8Q"\r
+#define VERSION "4.8R"\r
 \r
 #include <stdio.h>\r
 #include <stdlib.h>\r
@@ -222,7 +222,7 @@ int k,q,l,e,E,z,n;      /* (q,l)=window, e=current eval. score, E=e.p. sqr.*/
         {if(v+I&&x==K&y==L&gt==GT)             /*   if move found          */\r
          {Q=-e-i;O=F;LL=L;prom=gt;\r
           if(b[y]-u&15)prom=b[y]-=PromPiece,   /* under-promotion, correct */\r
-                       J+=PromPiece;           /*  piece & invalidate hash */\r
+                       Z+=PromPiece;           /*  piece & invalidate hash */\r
           a->D=99;a->V=0;                      /* lock game in hash as draw*/\r
           R-=i/FAC;                            /*** total captd material ***/\r
           Fifty = t|p<3?0:Fifty+1;\r
@@ -831,15 +831,12 @@ int main(int argc, char **argv)
                                             break;\r
                                         default:\r
                                             b[m]=p+color+32; // assume non-virgin\r
+                                           if(color==BLACK && m<0x10 && p==oo[m+16] || // but make virgin on original square\r
+                                               color==WHITE && m>0x6F && p==oo[m-0x70]) b[m] -= 32;\r
                                             if(w[p]<0) { // Royal piece on original square: virgin\r
-                                               if(color==BLACK && m<0x10 && p==oo[m+16] ||\r
-                                                   color==WHITE && m>0x6F && p==oo[m-0x70]) b[m] -= 32;\r
                                                 Q-=w[p]; // assume value was flipped to indicate royalty\r
                                                 if(pl[p+color])R-=w[p]/FAC; // capturable King, add to material\r
                                            } else { Q+=w[p]; R+=w[p]/FAC; }\r
-                                            if((m==0x00 || m==BW-1   ) && color==BLACK && p==oo[m+16] ||\r
-                                               (m==0x70 || m==0x6F+BW) && color==WHITE && p==oo[m-0x70])\r
-                                                b[m] &= ~32; // corner piece as in original setup: virgin\r
                                        case 0: // undefined piece, ignore\r
                                             break;\r
                                         }\r