From f0585c30c3c79e47d8febb1dff59864ef117d79b Mon Sep 17 00:00:00 2001
From: Justin Oros <JustinOros@gmail.com>
Date: Thu, 14 May 2026 16:12:15 -0700
Subject: [PATCH] =?UTF-8?q?Fix=20letter=20replacement=20regex=20=E2=80=94?=
 =?UTF-8?q?=20only=20rewrite=20'Both=20X=20and=20Y'=20patterns,=20not=20st?=
 =?UTF-8?q?andalone=20letters=20in=20answer=20text?=
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---
 game.js | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/game.js b/game.js
index ea4f019..44654a1 100644
--- a/game.js
+++ b/game.js
@@ -1088,8 +1088,17 @@ class Game {
     });
 
     function rewriteLetterRefs(text) {
-      return text.replace(/\b([ABCD])\b/g, (match, letter) => {
-        return letterToSlot[letter] !== undefined ? letterToSlot[letter] : match;
+      /* Only rewrite letters that appear in explicit option-reference patterns:
+         "Both A and B", "A and B", "Both B and C", etc.
+         Never replace standalone A/B/C/D in regular sentence text. */
+      return text.replace(/\bBoth ([ABCD]) and ([ABCD])\b/gi, (_, l1, l2) => {
+        const n1 = letterToSlot[l1.toUpperCase()];
+        const n2 = letterToSlot[l2.toUpperCase()];
+        return `Both ${n1 ?? l1} and ${n2 ?? l2}`;
+      }).replace(/\b([ABCD]) and ([ABCD])\b/g, (_, l1, l2) => {
+        const n1 = letterToSlot[l1];
+        const n2 = letterToSlot[l2];
+        return `${n1 ?? l1} and ${n2 ?? l2}`;
       });
     }