X-Git-Url: https://git.auder.net/?p=vchess.git;a=blobdiff_plain;f=client%2Fsrc%2Fvariants%2FAntiking2.js;h=2dad5e4912ba1bc68a0009c25281ac3c12173540;hp=087dce35c6e155caf2a3c16dde47828fe5a35121;hb=6f2f94374f1e73c375edf732d9425e575e81fff7;hpb=9dca2c935cebcaa3817b4f926f482f9cad4c5b53

diff --git a/client/src/variants/Antiking2.js b/client/src/variants/Antiking2.js
index 087dce35..2dad5e49 100644
--- a/client/src/variants/Antiking2.js
+++ b/client/src/variants/Antiking2.js
@@ -15,6 +15,19 @@ export class Antiking2Rules extends ChessRules {
     return b[1] == "a" ? "Antiking/" + b : b;
   }
 
+  static IsGoodPosition(position) {
+    if (!ChessRules.IsGoodPosition(position)) return false;
+    const rows = position.split("/");
+    // Check that exactly one antiking of each color is there:
+    let antikings = { 'a': 0, 'A': 0 };
+    for (let row of rows) {
+      for (let i = 0; i < row.length; i++)
+        if (['A','a'].includes(row[i])) antikings[row[i]]++;
+    }
+    if (Object.values(antikings).some(v => v != 1)) return false;
+    return true;
+  }
+
   setOtherVariables(fen) {
     super.setOtherVariables(fen);
     this.antikingPos = { w: [-1, -1], b: [-1, -1] };