Request: More Chess Variants

I would like to suggest additional chess variants which could be implemented on Lichess. I am not saying that all these variants should be added; instead, I would ask to add the most popular ones.

Kriegspiel (http://en.lichess.org/forum/lichess-feedback/feature-request-kriegspiel)

Bughouse (partner-chess variant) (en.wikipedia.org/wiki/Bughouse_chess) (very fun over-the-board)

Crazyhouse (similar to bughouse; pieces you capture switch to your side and can be dropped to a square on your turn) (en.wikipedia.org/wiki/Crazyhouse)

Monster chess (Black has usual pieces; White has king and four pawns but can make two moves per turn) (en.wikipedia.org/wiki/Monster_chess)

Checkless chess (no check allowed without checkmate; interesting possibilities for king) (en.wikipedia.org/wiki/Checkless_chess)

If you have additional ideas which you think may be popular, go ahead and add them below.

I'm not a big fan of variants but wow. These sound interesting

Sounds interesting!

I know that crazyhouse and bughouse won't be added anytime soon because they don't use the move list that works. For example, there is no way to write "A bishop appeared on f7" on a regular move list. The others sound like viable candidates though.

#5 there actually is notation for that. Like the example you said "A bishop appeared on f7" is written as B@f7.

Bughouse and crazyhouse is very very fun

For 'a bishop is dropped at b4', the most common notation is 'B@b4'. (See links below.) This makes crazyhouse doable, but bughouse may remain a problem because moves on the two boards are independent.

en.wikipedia.org/wiki/Crazyhouse#Notation
en.wikipedia.org/wiki/Bughouse_chess#Notation_and_sample_game

Machine gun chess should be in as well..
You do not get to play it against humans online unless you two know IRL and sit before the same computer as far as I know..
Zillions of games may be the only exception since it claims that it supports even new games but it is a paid site.

github.com/ornicar/lila/issues/441

If it's not listed there chances are the variant will
1. never see light, or
2. never lift off with enough interest and commitment by the sub-community necessary to survive.

@Unihedron I know Machine gun chess is not in, but it is a cool variant. With its availability there may be people willing to try it. It is as cool as atomic..

Without the product available in human vs human online we do not know whether it will be popular. Hellball also said good things about it. .

Why not try it yourself in playing both sides on Pathguy? Note that the queen, rooks and bishops are strong while other pieces are less important.