From b9b6cc0b9d6bdc6f70357666b0e1a325ab5247f6 Mon Sep 17 00:00:00 2001
From: Marc Lanctot <lanctot@google.com>
Date: Thu, 1 Aug 2024 12:58:23 +0000
Subject: [PATCH] Shorter outcome strings for Chess960.

PiperOrigin-RevId: 658373627
Change-Id: I32ff30afef62ce9843e7591cdbd69ac6a604ab8a
---
 open_spiel/games/chess/chess.cc | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/open_spiel/games/chess/chess.cc b/open_spiel/games/chess/chess.cc
index 80acbe2047..f683ecaef3 100644
--- a/open_spiel/games/chess/chess.cc
+++ b/open_spiel/games/chess/chess.cc
@@ -368,8 +368,7 @@ std::string ChessState::ActionToString(Player player, Action action) const {
     // Chess960 has an initial chance node.
     SPIEL_CHECK_GE(action, 0);
     SPIEL_CHECK_LT(action, 960);
-    return absl::StrCat("Chance node outcome ", action, ": ",
-                        ParentGame()->Chess960LookupFEN(action));
+    return absl::StrCat("ChanceNodeOutcome_", action);
   }
   Move move = ActionToMove(action, Board());
   return move.ToSAN(Board());