# Quantum Chess

ogb
Science 21 Jun '17 05:40
1. 21 Jun '17 05:40
in quantum chess, you can never be checkmated because your King will be in two places at once ! It's a great way to play chess and never lose !
2. 21 Jun '17 06:36
Originally posted by ogb
in quantum chess, you can never be checkmated because your King will be in two places at once ! It's a great way to play chess and never lose !
But, of the same reason, my queen will also be at multiple places at the same time, and can mate your king in every place simultaneously.

When, in quantum-chess, you promote a pawn on the last row, you don't just promote it to a queen, but to every legal piece, at the same time!
3. 21 Jun '17 09:19
Originally posted by ogb
in quantum chess, you can never be checkmated because your King will be in two places at once ! It's a great way to play chess and never lose !
But if your king is in check in one square, ir's being observed by the checking piece. This observation collapses the king's wave function, at which point he'll be in one position after all, and the mate will still work.
4. 21 Jun '17 09:334 edits
Every game will begin and end in stalemate because, before either players makes a move, both players will be in checkmate for the opponent's queen (and all other opponent's pieces) will be on every square so there will be no escape of the king from it; the king will be in check.

If it wasn't for this, not sure how the rules for pawn promotion would work but, given the immediate stalemate, they wouldn't.
5. joe shmo
Strange Egg
21 Jun '17 11:56
Originally posted by ogb
in quantum chess, you can never be checkmated because your King will be in two places at once ! It's a great way to play chess and never lose !
Ummm...better go back to the drawing board. Quantum Chess is simply...Chess.
6. 21 Jun '17 21:58
your Queen would NOT be in two places at once..because u need to observe it first. Otherwise all the pieces are where they are supposed to be. When a King is in check, it is observed
7. apathist
looking for loot
29 Jun '17 02:29
Originally posted by ogb
your Queen would NOT be in two places at once..because u need to observe it first. Otherwise all the pieces are where they are supposed to be. When a King is in check, it is observed
Which gives me an idea. Invisible chess. All pieces are invisible until observed by any opponent piece. Any visible piece may be able to move to an unobserved square and poof! Where did it go?

Fog of war!
8. 12 Jul '17 05:51
Originally posted by apathist
Which gives me an idea. [b]Invisible chess. All pieces are invisible until observed by any opponent piece. Any visible piece may be able to move to an unobserved square and poof! Where did it go?

Fog of war![/b]
What you are referring to is mutli-dimensional chess. String Theory chess will be played in 11 dimensions. But only see the board in your own dimension. shouldn't be too hard..