From 6ebd96825576b2da8e8acf2ac85d0b82a7531424 Mon Sep 17 00:00:00 2001
From: Loic Guegan <manzerbredes@mailbox.org>
Date: Tue, 10 Jan 2023 17:13:23 +0100
Subject: [PATCH] Add # sign to SAN moves when player is checkmate

---
 src/ChessArbiter.cpp   | 6 ++++--
 tests/chessarbiter.cpp | 5 +++++
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/ChessArbiter.cpp b/src/ChessArbiter.cpp
index fdda48d..8612fc4 100644
--- a/src/ChessArbiter.cpp
+++ b/src/ChessArbiter.cpp
@@ -178,8 +178,10 @@ bool ChessArbiter::Play(const std::string &move, char promote) {
       return (false);
     }
 
-    // Don't forget the plus sign on the SAN move
-    if(IsCheck(fen.player)){
+    // Don't forget the plus and # sign on the SAN moves
+    if(IsCheckMate()){
+      SAN+="#";
+    } else if(IsCheck(fen.player)){
       SAN+="+";
     }
 
diff --git a/tests/chessarbiter.cpp b/tests/chessarbiter.cpp
index 931b545..1c013cc 100644
--- a/tests/chessarbiter.cpp
+++ b/tests/chessarbiter.cpp
@@ -524,4 +524,9 @@ TEST_CASE("Specific bugs found on a game", "[BugFixes]") {
   a.Play("d6d3");
   CHECK(!a.IsCheck(false));
   CHECK(a.GetSAN()=="Qd3");
+
+  // Bug 7 SAN move that lead to checkmate must have a # sign on the SAN moves
+  a.Setup("rnb1k1nr/pppp1ppp/4P3/8/1b3B2/1Nq5/PPP1PPPP/R2KNB1R b kq - 16 12");
+  a.Play("c3e1");
+  CHECK(a.GetSAN()=="Qxe1#");
 }
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