From 3b52410d4dbb3d7af526c28934af5204c04f43f8 Mon Sep 17 00:00:00 2001
From: ianfab <ianfab@users.noreply.github.com>
Date: Wed, 22 Aug 2018 21:58:45 +0200
Subject: [PATCH] More robust shogi move parsing

Allow optional equals sign at end of move string.
---
 src/uci.cpp |   11 +++++++++--
 1 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/uci.cpp b/src/uci.cpp
index d17a467..ec8c044 100644
--- a/src/uci.cpp
+++ b/src/uci.cpp
@@ -316,8 +316,15 @@ string UCI::move(const Position& pos, Move m) {
 
 Move UCI::to_move(const Position& pos, string& str) {
 
-  if (str.length() == 5) // Junior could send promotion piece in uppercase
-      str[4] = char(tolower(str[4]));
+  if (str.length() == 5)
+  {
+      if (str[4] == '=')
+          // shogi moves refraining from promotion might use equals sign
+          str.pop_back();
+      else
+          // Junior could send promotion piece in uppercase
+          str[4] = char(tolower(str[4]));
+  }
 
   for (const auto& m : MoveList<LEGAL>(pos))
       if (str == UCI::move(pos, m))
-- 
1.7.0.4