Four-Player Infinite Chess - The Battle of Morgarten!

Since this is teams (White against Black) the player for each army keeps moving his own pieces (even if a king is lost).

Either (Luke_Hands and vickalan) wins, or (hitthepin and McGoohnan) wins. It's not a single player that wins.

But I don't know if we made it clear what to do if one person is a no-show.

Turns out vickalin's request to change the spelling of team worked! Now there IS an I in team!

I can take over!

I forgot why I said "I". It might have been because I thought I might be playing for Luke_Hands while he wasn't here.

But if someone is a no-show, you can take over. We will hold you to that, even if you take over for the side that is inferior.

If I do, and I'm down material? You know what happens, right (game v. Tugwash)? EVEN. MORE. SACRIFICES.

haha

Based on the short paragraph we wrote combined with the normal rules, I believe this is the rules for our game:

If any king is in check, he must move out of check.

No king can move into check.

If one king is in checkmate (and the other not) then obviously he cannot get out of check. So he can move to a different square (still be in checkmate) or another piece can be moved. edit: Actually I'm not sure if a checkmated king should be allowed to move. Is this forbidden?

The team that applied a checkmate on the first king can optionally capture the king (one king removed from the board), or they can leave the king in checkmate and play another move.

With these rules it is possible that the first king can be checkmated, but if not captured there are ways he can be freed from checkmate.

Checking and Checkmating the last king is completelly the same as normal chess, and that is how the game is won.

But I don't know if this covers every possible scenario. I've never played a game before where each team has two kings. Anything I missed?

It's sunny and there is fluffy snow outside. I'm going to play in the snow, and come back later to play my move.

Hey vick, if you're too busy then fair enough, but if you have a few minutes, can we have a board update for tomato vs me please? It's quite tense...

Ha nice cross post. Go play in the snow!

I know it's my turn, and it's been three days. I'll play my move first thing tomorrow.

Since a game goes on after the first king is checkmated, I think we need to decide if a mated king is allowed to move. Usually I don't think it would be the best playable move, but it is a technicality we should decide.

I'm a neutral, I have no vested interest one way or the other.

I would say it's crazy to allow a checkmated king to capture the piece that checkmated it. I disincentivises checkmating the king with a powerful piece.

If we're allowing the defeated king's pieces to continue playing for the team, then we should probably say a checkmated king is rooted to the spot.

Consider that in capturing the piece, the king puts himself in check. If he doesn't, it's not checkmate.

I agree that a checkmated king should not be allowed to make any move. The player with the checkmated king will need to make a different move instead. Here is an example. Each side has two kings.

Black plays 50...Qd4#

(so White to move).

This is allowed:
51.Nd1...QxK

This NOT allowed:
51.KxQ...PxK

(so if nobody objects, when a team still has both kings, a checkmated king is not allowed to move).

Sorry for being late with my move. Here it is (bold):
19.R(10,5)...(4,5)
20.Q(8,11)+...(18,6)