The official answer is that you cannot promote a pawn to a king, so this situation would never arise. However, this is Anarchy Chess, so let's set that aside.

If this situation did happen, and it is Black's turn, it is not checkmate, because Black's bishop takes the queen. It could not be White's turn, because there is no way to arrive at this board state on Black's turn without one or both kings being in check at the beginning of the turn, and so Black's move would have needed to remove their king from check.

Therefore, this board state is not checkmate.

[–] Kanda@reddthat.com 43 points 1 year ago (1 children)

The bishop is on strike as modern religious conditions makes his day-to-day services auxiliary and thus he will not attack until he gets paid

[–] Spuddaccino@reddthat.com 15 points 1 year ago (2 children)

One of the kings could still pay the bishop, so still not checkmate.

[–] kittehx@lemmy.blahaj.zone 8 points 1 year ago (1 children)

Except that the bishop won't actually receive the funds until the next business day, which would be too late. Now of course this wouldn't be an issue if the payment could be made in cash, but due to the distance between the bishop and the kings, the only option is an electronic transfer.

[–] Natanael@slrpnk.net 4 points 1 year ago* (last edited 1 year ago)

Since it's anarchychess the bishop rejects their Mastercard, but it would accept Bitcoin. However the kings lost their Bitcoin to a scammer the week before.

[–] Kanda@reddthat.com 7 points 1 year ago

They could, but you have to think about the bottom line and how it would affect the shareholders

[–] PugJesus@kbin.social 51 points 1 year ago

No, it's just hot.

[–] Slinky5737@infosec.pub 26 points 1 year ago (1 children)

Simply stack the two kings (after declaring "king me," of course). You may now move the stacked kings in any direction. If a piece, including a queen, attempts to capture the stacked kings, the demotion sound from Super Mario Bros. is played, the top king is removed, and the bottom king may capture the attacking piece.

Therefore, this is not mate.

[–] TonyToniToneOfficial@lemmy.ml 7 points 1 year ago

Also, stacked kings weigh more and can thus squish an opponent

[–] occhineri@feddit.de 17 points 1 year ago (1 children)

What century is this? When two kings want to mate, just leave them in peace unless you're about to consensually join.

[–] ThrowawayPermanente@sh.itjust.works 1 points 1 year ago

If two kings mate each other they both die. The book says a thing.

[–] saltnotsugar@lemm.ee 7 points 1 year ago (1 children)

This is called the “Bro’s mate” and was widely used in the early 1800’s.

[–] Bonehead@kbin.social 7 points 1 year ago (1 children)

It was widely used up until roughly the 1990s. Then they just came out and admitted to being in a monogamous relationship, as it was more publicly acceptable by then.

[–] Slinky5737@infosec.pub 4 points 1 year ago

It is now protected under the SCOTUS decision in the Obergfell case.

[–] systemglitch@lemmy.world 4 points 1 year ago

I don't see the issue with that bishop there.

[–] starman2112@sh.itjust.works 3 points 1 year ago (1 children)

My question is, can two kings and a bishop force checkmate?

[–] DragonOracleIX@lemmy.ml 2 points 1 year ago

Probably not, but a checkmate is possible if the white king works with black to make it happen.

[–] Crackhappy@lemmy.world 1 points 1 year ago

Two kings, sounds like a good plan.

[–] Jackcooper@lemmy.world 1 points 1 year ago (1 children)

Two kings can't touch each other smh

[–] v3x@lemm.ee 2 points 1 year ago

there's actually no rule of that

weird that you mention that, rather than the actual rule which makes this impossible, that you can't normally promote to a king. clearly OP found an exception to that rule though