Fixed a bug in singular extensions and updated move sorting.

konsolas · konsolas · commit ebdef74a0cdc · 2020-06-05T13:04:18.000+01:00
diff --git a/.gitignore b/.gitignore
@@ -1,2 +1,5 @@
 .idea/
+.vscode/
 cmake-build-debug/
+cmake-build-release/
+build/
diff --git a/movesort.cpp b/movesort.cpp
@@ -86,7 +86,7 @@ move_t movesort_t::next(GenStage &stage, int &score, bool skip_quiets) {
                     } else {
                         main_scores[i] = heur.history.get(main_buf[i]);
                         if (refutation.info.is_capture && main_buf[i].info.from == refutation.info.to) {
-                            main_scores[i] += 100;
+                            main_scores[i] += 800;
                         }
                     }
                 }
diff --git a/movesort.h b/movesort.h
@@ -24,15 +24,15 @@ class history_heur_t {
 public:
     void update(move_t move, int bonus) {
         table[move.info.team][move.info.from][move.info.to] +=
-                bonus - table[move.info.team][move.info.from][move.info.to] * abs(bonus) / 2048;
+                bonus - table[move.info.team][move.info.from][move.info.to] * abs(bonus) / 16384;
     }
 
     int get(move_t move) const {
         return table[move.info.team][move.info.from][move.info.to];
     }
 private:
     // Indexed by [TEAM][FROM][TO]
-    int table[2][64][64] = {};
+    int16_t table[2][64][64] = {};
 };
 
 // Killer heuristic
diff --git a/pvs.cpp b/pvs.cpp
@@ -260,7 +260,7 @@ namespace pvs {
                     && (h_bound == tt::LOWER || h_bound == tt::EXACT)
                     && h.depth() >= depth - 2) {
                     int reduced_beta = (h.value(ply)) - depth;
-                    score = search_zw(reduced_beta, ply, depth / 2, aborted);
+                    score = search_zw(reduced_beta, ply, depth / 2, aborted, move);
                     if (aborted) return TIMEOUT;
 
                     if (score < reduced_beta) {

Original file line number	Diff line number	Diff line change
`@@ -86,7 +86,7 @@ move_t movesort_t::next(GenStage &stage, int &score, bool skip_quiets) {`
`86`	`86`	`} else {`
`87`	`87`	`main_scores[i] = heur.history.get(main_buf[i]);`
`88`	`88`	`if (refutation.info.is_capture && main_buf[i].info.from == refutation.info.to) {`
`89`		`- main_scores[i] += 100;`
	`89`	`+ main_scores[i] += 800;`
`90`	`90`	`}`
`91`	`91`	`}`
`92`	`92`	`}`