Timeline for Find a chess position that can occur twice but not thrice in a single game
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Feb 13 at 22:29 | comment | added | Bass | Ah, sure. My bad. So the problem is only that you can't reach this position again with white to play. | |
| Feb 13 at 16:03 | comment | added | Retudin | @Bass the last black move can be with the king (I added notation to clarify things). | |
| Feb 13 at 16:00 | history | edited | Retudin | CC BY-SA 4.0 |
added 216 characters in body
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| Feb 13 at 1:15 | comment | added | Bass | How do you intend to get back to this position again? On the first go, the previous black move can have been a pawn push, but the second time around black has no possible previous move, no matter whose turn it is. | |
| Feb 12 at 22:44 | comment | added | SkySpiral7 | Maybe I'm just failing to parse SAN (Super Ambiguous Notation) but your move list at the bottom doesn't make sense. If white castles then it would be black's turn which can't move a3b3 or b1a1 (since those are white rooks). I don't know what "space" you refer to since the black king still can't move (did you mean for black to f2f1?) which in turn makes "Kb8" impossible since he's already there. And I don't see how the image's board would happen again (but not a 3rd time) | |
| Feb 12 at 18:35 | comment | added | Retudin | Ah, position includes whose turn it is?! Then you are right that my solution is incorrect. | |
| Feb 12 at 18:22 | history | answered | Retudin | CC BY-SA 4.0 |