From 4658cccd6ce133834567c11c24a631f73e5d0527 Mon Sep 17 00:00:00 2001
From: Allirey <22729337+Allirey@users.noreply.github.com>
Date: Thu, 23 Oct 2025 11:13:33 +0200
Subject: [PATCH 1/2] prevent stacking of duplicated pvs

---
 ui/lib/src/ceval/protocol.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ui/lib/src/ceval/protocol.ts b/ui/lib/src/ceval/protocol.ts
index 3bd82c24e87eb..7101060b56162 100644
--- a/ui/lib/src/ceval/protocol.ts
+++ b/ui/lib/src/ceval/protocol.ts
@@ -132,7 +132,7 @@ export class Protocol {
           pvs: [pvData],
         };
       } else if (this.currentEval) {
-        this.currentEval.pvs.push(pvData);
+        this.currentEval.pvs[multiPv - 1] = pvData;
         this.currentEval.depth = Math.min(this.currentEval.depth, depth);
       }
 

From 44684f57b1d675c52cef150833a9c541abf8fbbe Mon Sep 17 00:00:00 2001
From: Allirey <22729337+Allirey@users.noreply.github.com>
Date: Thu, 23 Oct 2025 18:33:14 +0200
Subject: [PATCH 2/2] fix pv1 still occasionally getting duplicated with
 another pvs

---
 ui/lib/src/ceval/protocol.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/ui/lib/src/ceval/protocol.ts b/ui/lib/src/ceval/protocol.ts
index 7101060b56162..20d286f80fd21 100644
--- a/ui/lib/src/ceval/protocol.ts
+++ b/ui/lib/src/ceval/protocol.ts
@@ -131,8 +131,8 @@ export class Protocol {
           mate: isMate ? ev : undefined,
           pvs: [pvData],
         };
-      } else if (this.currentEval) {
-        this.currentEval.pvs[multiPv - 1] = pvData;
+      } else if (this.currentEval && this.currentEval.pvs.length < multiPv) {
+        this.currentEval.pvs.push(pvData);
         this.currentEval.depth = Math.min(this.currentEval.depth, depth);
       }