no vcf evaluation

use alpha to replace static eval test f15
dhbloo · Oct 13, 2024 · 0d580f6 · 0d580f6
1 parent b06b9cf
commit 0d580f6
Showing 1 changed file with 3 additions and 7 deletions.
diff --git a/Rapfi/search/ab/search.cpp b/Rapfi/search/ab/search.cpp
@@ -1560,7 +1560,7 @@ Value vcfsearch(Board &board, SearchStack *ss, Value alpha, Value beta, Depth de
         if (ttEval != VALUE_NONE)
             ss->staticEval = ttEval;
         else if (depth < 0)
-            ss->staticEval = Evaluation::evaluate<Rule>(board, alpha, beta);
+            ss->staticEval = alpha;
         bestValue = ss->staticEval;
 
         // Try to use ttValue as a better eval estimation
@@ -1569,12 +1569,8 @@ Value vcfsearch(Board &board, SearchStack *ss, Value alpha, Value beta, Depth de
             bestValue = ttValue;
     }
     else {
-        if (depth < 0) {
-            // In case of null move search use previous static eval with a different sign
-            ss->staticEval = (ss - 1)->currentMove == Pos::PASS
-                                 ? -(ss - 1)->staticEval
-                                 : Evaluation::evaluate<Rule>(board, alpha, beta);
-        }
+        if (depth < 0)
+            ss->staticEval = alpha;
 
         bestValue = ss->staticEval;
     }