elo: min arena depth offset

src/elo.rs

@@ -25,7 +25,7 @@ pub fn run() {
         children_eval_method: ChildrenEvalMethod::Average,
     };
 
-    let configs = (1..=6)
+    let configs = (4..=6)
         .map(move |d| FutureMoveConfig {
             max_depth: d,
             ..FMV_BASE
@@ -51,6 +51,23 @@ pub fn run() {
                     ..prev_c
                 })
                 .to_vec()
+        })
+        .flat_map(move |prev_c| {
+            if prev_c.do_not_prune {
+                // do not bother making configs where do_not_prune is true
+                // as top_k_children does nothing when pruning is skipped
+                return vec![prev_c];
+            }
+
+            // different values of top_k_children
+            [1, 2, 3]
+                .into_iter()
+                .filter(|&x| x <= prev_c.max_depth)
+                .map(move |ad_offset| FutureMoveConfig {
+                    min_arena_depth: prev_c.max_depth - ad_offset,
+                    ..prev_c
+                })
+                .collect()
         });
 
     let vec: Vec<(String, Box<dyn Fn(Piece) -> Box<dyn Agent>>)> = configs