You are contradicting yourself. All 960 positions are offered because a computer randomly generates the starting position. But some position generators will kick out the normal position, and the normal position with king and queen swapped, which leaves 958 possibilities. You say it's always 960, but it might not be 960 positions offered here, what are you talking about?
Chess960 Explained!
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Apr 23, 2020
0
#364
apart from standard chess, has anyone got the same opening variation twice in a row ? ?
Apr 23, 2020
0
#365
Chill-Bhronai wrote:
apart from standard chess, has anyone got the same opening variation twice in a row ? ?
Normally it is just a random generator, so after playing one given position, the chances of getting it again in the next game are 1 in 960. Unlikely but not impossible.
In tournaments often the same position is played twice so that each player gets a chance as white and black. Some 960 positions give white a greater advantage than white has in the normal chess starting position.
You clicked on the wrong square. You should click on b1. Happened to me many times
Apr 27, 2020
0
#368
b1 I don't think so. Select the king then select the rook and they will Castle. But something is screwed up. I can't get it to Castle in analysis and the engine doesn't give Castle as an option.
Apr 27, 2020
0
#369
Troll. It's not a 960 position he just set the pieces up custom. That's why engine doesn't see Castle as an option.
ooof what a troll
Apr 27, 2020
0
#371
abhilsh wrote:
I can't castle here, why?
Did you setup this position with the analysis board?
If yes, you must set the game type to chess960.
https://www.chess.com/a/2hoQBJaoYVRyx
wtf
forked_again wrote:
You are contradicting yourself. All 960 positions are offered because a computer randomly generates the starting position. But some position generators will kick out the normal position, and the normal position with king and queen swapped, which leaves 958 possibilities. You say it's always 960, but it might not be 960 positions offered here, what are you talking about?
The "king and queen swapped" is NOT a mirror FIDE Chess position that you might assume it is. That's because the FIDE castling rules are applied by the letter of the rules and not by a simple maxum. When the White King starts on d1 instead of e1, after a castle toward the "a" file, it will result in King on c1 and Rook on d1, In the other direction it's King on g1 and Rook on f1.
If you look above in the position posted by manekapa, you'll notice that if the King castled to the "g" file, the Rook won't move at all in Castling, the King will simply leap over it to the g1 square.
Jul 5, 2020
0
#374
neoliminal wrote:
forked_again wrote:
You are contradicting yourself. All 960 positions are offered because a computer randomly generates the starting position. But some position generators will kick out the normal position, and the normal position with king and queen swapped, which leaves 958 possibilities. You say it's always 960, but it might not be 960 positions offered here, what are you talking about?
The "king and queen swapped" is NOT a mirror FIDE Chess position that you might assume it is. That's because the FIDE castling rules are applied by the letter of the rules and not by a simple maxum. When the White King starts on d1 instead of e1, after a castle toward the "a" file, it will result in King on c1 and Rook on d1, In the other direction it's King on g1 and Rook on f1.
If you look above in the position posted by manekapa, you'll notice that if the King castled to the "g" file, the Rook won't move at all in Castling, the King will simply leap over it to the g1 square.
At chess.com, the normal position with King and Queen swapped, is as a matter of fact potentially selected. Here's the example:
https://www.chess.com/live#a=436253
evert823 wrote:
neoliminal wrote:
forked_again wrote:
You are contradicting yourself. All 960 positions are offered because a computer randomly generates the starting position. But some position generators will kick out the normal position, and the normal position with king and queen swapped, which leaves 958 possibilities. You say it's always 960, but it might not be 960 positions offered here, what are you talking about?
The "king and queen swapped" is NOT a mirror FIDE Chess position that you might assume it is. That's because the FIDE castling rules are applied by the letter of the rules and not by a simple maxum. When the White King starts on d1 instead of e1, after a castle toward the "a" file, it will result in King on c1 and Rook on d1, In the other direction it's King on g1 and Rook on f1.
If you look above in the position posted by manekapa, you'll notice that if the King castled to the "g" file, the Rook won't move at all in Castling, the King will simply leap over it to the g1 square.
At chess.com, the normal position with King and Queen swapped, is as a matter of fact potentially selected. Here's the example:
https://www.chess.com/live#a=436253
I'm not suggesting that there is no Chess960 position where the King and Queen are swapped, there obviously is. However this is not a mirrored position of Classic Chess because the King will not have mirrored Castling options. If you need examples, I'll provide them.
Jul 11, 2020
0
#376
neoliminal wrote:
evert823 wrote:
neoliminal wrote:
forked_again wrote:
You are contradicting yourself. All 960 positions are offered because a computer randomly generates the starting position. But some position generators will kick out the normal position, and the normal position with king and queen swapped, which leaves 958 possibilities. You say it's always 960, but it might not be 960 positions offered here, what are you talking about?
The "king and queen swapped" is NOT a mirror FIDE Chess position that you might assume it is. That's because the FIDE castling rules are applied by the letter of the rules and not by a simple maxum. When the White King starts on d1 instead of e1, after a castle toward the "a" file, it will result in King on c1 and Rook on d1, In the other direction it's King on g1 and Rook on f1.
If you look above in the position posted by manekapa, you'll notice that if the King castled to the "g" file, the Rook won't move at all in Castling, the King will simply leap over it to the g1 square.
At chess.com, the normal position with King and Queen swapped, is as a matter of fact potentially selected. Here's the example:
https://www.chess.com/live#a=436253
I'm not suggesting that there is no Chess960 position where the King and Queen are swapped, there obviously is. However this is not a mirrored position of Classic Chess because the King will not have mirrored Castling options. If you need examples, I'll provide them.
No one has said anything about "Mirrored" except you
forked_again wrote:
You are contradicting yourself. All 960 positions are offered because a computer randomly generates the starting position. But some position generators will kick out the normal position, and the normal position with king and queen swapped, which leaves 958 possibilities.
Jul 11, 2020
0
#378
neoliminal wrote:
forked_again wrote:
You are contradicting yourself. All 960 positions are offered because a computer randomly generates the starting position. But some position generators will kick out the normal position, and the normal position with king and queen swapped, which leaves 958 possibilities.
And the point is.......
(Drumroll please)
Jul 11, 2020
0
#379
forked_again wrote:
neoliminal wrote:
forked_again wrote:
You are contradicting yourself. All 960 positions are offered because a computer randomly generates the starting position. But some position generators will kick out the normal position, and the normal position with king and queen swapped, which leaves 958 possibilities.
And the point is.......
(Drumroll please)
Ok I think maybe I have figured out your point. The king and queen swapped is eliminated as a possibility not because it is the same, or mirrored as you say, of the standard position. I believe it is removed as a possibility just because it is too close to normal chess for those who want to play 960. But I agree it is a different game than the standard position.
I believe that all 960 positions are possible on Chess.com, including the "Classic Fide" starting position. Fischer, who invented this variant, imagined Classic Fide chess to be a subset and the rules were crafted in a way that included the original back rank arrangement. So yes, it's possible to play a classic game of chess in Chess960, it's a 1 in 960 chance.
You're correct about my point, that the position that looks like Classic Fide Chess with swapped King and Queen is also a valid position, my only point being that it's not a mirrored position and tactics differ because castling will be different.
I don't believe the standard position is included. And I stated I wasn't sure all 960 were offered.