21–30 of 131 posts
Seems like it always queens pawns; I'd hoped to see some exciting random promotions :/.
We imprint our own flawed notions of randomness on everything.
I'm also curious how rare a victory is here, and if it can be modeled with math.
Because check mate is a very small subset of possible moves at the end game, I'm guessing the vast majority of games will end(?) with 2 kings moving around randomly for all of time. This assumes most games will make it past the hump of mid game where its possible the king's motion will be limited and a checkmate can erroneously happen, I suspect this is a rare case as well. On a side note I wonder what kind of useful…
I saw one game quickly become a lone white king against six black pieces. The king eventually captured three of them, and then the game gave up after some number of fruitless moves. Even with that advantage, black couldn't randomly stumble across checkmate.
That's what I got and I think once you get to the end, a stalemate with an imbalance of pieces on one side may be the most likely.
Because check mate is a very small subset of possible moves at the end game, I'm guessing the vast majority of games will end(?) with 2 kings moving around randomly for all of time. This assumes most games will make it past the hump of mid game where its possible the king's motion will be limited and a checkmate can erroneously happen, I suspect this is a rare case as well. On a side note I wonder what kind of useful…
Hah, that's what I got on my second run: http://i.imgur.com/joLf3BX.png
The game stopped right there, though.
Edit: Hah! Again! http://i.imgur.com/2ItU89S.png
Earlier quoted context omitted.
If it's impossible to checkmate then it's a stalemate. So if one side has one king and the other side one king (or even one king and a pawn, bishop, knight or rook) then it's a stalemate and the game ends. edit: forgot you can checkmate with just a king and a queen
Pawn wouldn't be stalemate because it can be promoted to a queen. I think it's also possible to checkmate with a rook + king (if you corner the king and have your king cover the escape route from check).
while no checkmate:
If your rook is about to be taken, move it to the other end of the current rank.
If the enemy king is on rank n and your rook is anywhere but rank n-1, move your rook to rank n-1 (unless it can then be taken, in which case move it to the end of its current rank.)
If your king is anywhere but rank n-2, move towards there.
If your kings are on the same file, advance the rook to rank n (unless it can be taken...)
If |file of your king - file of opponents king| is odd, make a wasted move with the rook (keeping it on the same rank).
If you've gotten this far, move your king towards the opponent's king (staying on the same rank n-2).Because check mate is a very small subset of possible moves at the end game, I'm guessing the vast majority of games will end(?) with 2 kings moving around randomly for all of time. This assumes most games will make it past the hump of mid game where its possible the king's motion will be limited and a checkmate can erroneously happen, I suspect this is a rare case as well. On a side note I wonder what kind of useful…
> I'm guessing the vast majority of games will end(?) with 2 kings moving around randomly for all of time. Hah, that's what I got on my second run: http://i.imgur.com/joLf3BX.png The game stopped right there, though. Edit: Hah! Again! http://i.imgur.com/2ItU89S.png
I don't play chess beyond knowing the rules, but this is a lot more fun than watching a tournament!
Because check mate is a very small subset of possible moves at the end game, I'm guessing the vast majority of games will end(?) with 2 kings moving around randomly for all of time. This assumes most games will make it past the hump of mid game where its possible the king's motion will be limited and a checkmate can erroneously happen, I suspect this is a rare case as well. On a side note I wonder what kind of useful…
If it's impossible to checkmate then it's a stalemate. So if one side has one king and the other side one king (or even one king and a pawn, bishop, knight or rook) then it's a stalemate and the game ends. edit: forgot you can checkmate with just a king and a queen
In rare circumstances you can checkmate with a king and a single bishop: http://www.chess.com/forum/view/more-puzzles/mate-with-one-b...
Earlier quoted context omitted.
If it's impossible to checkmate then it's a stalemate. So if one side has one king and the other side one king (or even one king and a pawn, bishop, knight or rook) then it's a stalemate and the game ends. edit: forgot you can checkmate with just a king and a queen
Pawn wouldn't be stalemate because it can be promoted to a queen. I think it's also possible to checkmate with a rook + king (if you corner the king and have your king cover the escape route from check).
Because check mate is a very small subset of possible moves at the end game, I'm guessing the vast majority of games will end(?) with 2 kings moving around randomly for all of time. This assumes most games will make it past the hump of mid game where its possible the king's motion will be limited and a checkmate can erroneously happen, I suspect this is a rare case as well. On a side note I wonder what kind of useful…
> I'm guessing the vast majority of games will end(?) with 2 kings moving around randomly for all of time. Hah, that's what I got on my second run: http://i.imgur.com/joLf3BX.png The game stopped right there, though. Edit: Hah! Again! http://i.imgur.com/2ItU89S.png
Other draw conditions include:
* Stalemate (=The side to move has no legal moves)
* 50 moves in a row without any permanent changes happening ("permanent changes" means a pawn moving or a piece being captured)
* Exactly the same game state occurs for the third time ("game state" is whose turn it is + status of castling ability + status of en passant possiblity + which pieces are where)
* Agreed draw
Fun fact: In normal time controls (not blitz) at competitive levels, chess games virtually never end in one of the termination conditions. I don't have statistics on hand but I would expect resignations and agreed draws account for 98%+ of grandmaster-level games.