Seirawan mating conditions

alexobviously · Feb 4, 2024 · 72b6cb1 · 72b6cb1
1 parent 4537a33
commit 72b6cb1
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Showing 3 changed files with 6 additions and 2 deletions.
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,5 +1,6 @@
 ### 1.4.1
-- **Potentially breaking**: FEN strings without castling rights specified now default to no castling rights, instead of all castling rights.
+- **Potentially breaking**: FEN strings without castling rights specified now default to no castling rights, instead of all castling rights (thanks @govind-maheshwari2).
+- Fixed Seirawan chess mating conditions not taking `H` and `E` into account (thanks @malaschitz).
 
 ### 1.4.0
 - Custom move generation and processing (beta):

diff --git a/lib/src/variant/options/material_conditions.dart b/lib/src/variant/options/material_conditions.dart
@@ -53,7 +53,7 @@ class MaterialConditions<T> {
         },
       };
 
-  MaterialConditions copyWith({
+  MaterialConditions<T> copyWith({
     bool? enabled,
     List<T>? soloMaters,
     List<T>? pairMaters,

diff --git a/lib/src/variant/variants/common.dart b/lib/src/variant/variants/common.dart
@@ -27,6 +27,9 @@ class CommonVariants {
         'H': PieceType.archbishop(), // hawk
         'E': PieceType.chancellor(), // elephant
       },
+      materialConditions: MaterialConditions.standard.copyWith(
+        soloMaters: ['P', 'Q', 'R', 'E', 'H'],
+      ),
     );
   }