-Saw once a "double challenge" bug, one anonymous and a second one logged
-Both were asked a challenge probably, and both challenges added as different ones.
+Merge variants 1, 2 (3) into one with sub-variant selection when starting a game (New Game + vs engine + analyse)
+E.g. Checkered 1 & 2 into one, and so on.
+Need additional field in variant code... in a generic way (radiobutton or select or checkbox?)
+
+#New variants:
+Chessplode
+Tablut
+
+https://brainking.com/fr/GameRules?tp=128 Massacre Chess
+
+CWDA : need game options (also useful at least for Monster)
+PizzaKings https://www.chessvariants.com/unequal.dir/pizza-kings.html
+https://en.m.wikipedia.org/wiki/Chess_with_different_armies#Pizza_Kings%5B11%5D_(John_Lawson)
+
+https://www.chessvariants.com/other.dir/nemoroth.html :-)