All Questions
9,188
questions
1
vote
1
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48
views
Why does this quiet position with material in White's favour not favour White?
I was experimenting with SF static evaluation and found that the following position is evaluated as slightly in favour of Black.
[Title "White to move"]
[FEN "3qkbnr/p1pp1ppp/8/...
- 2,834
2
votes
1
answer
56
views
Longest depth for a half-point zugzwang
What is the maximum depth of a half-point zugzwang? Depth is defined as the number of fullmoves it takes for the winning side to win. I know 245 is possible. (Ignore 50-move, 75-move rules).
[Title &...
- 826
1
vote
2
answers
39
views
Notation in Xiangqi when two files each contain two pieces of the same colour and type
I've been reading the World Xiangqi Rules as approved by the World Xiangqi Federation and the Chinese Xiangqi Association, and in particular Article 7.5 which governs the notation for recording moves ...
- 153
11
votes
2
answers
2k
views
In this position, why is the move 12. Be3 rarely played by top players?
[Title ""]
[Fen ""]
[Startply "22"]
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.h3 Na5
10.Bc2 c5 11.d4 Nd7 *
In the above position, ...
- 9,221
0
votes
1
answer
31
views
How to use Extract pgn
I have a pgn file with a lot of Grunfeld variations(called game2.pgn) and I would like to separate them all in different pgn files. I've tried but I don't understand very well the instructions. Thanks
-1
votes
2
answers
78
views
What the answer to this problem? (probably A Posteriori)
[Title "#2 - Leonid M. Borodatow. Die Schwalbe 163 02/1997"]
[FEN "r3k3/2pN3P/5PPP/6pp/7p/6P1/N5P1/R3KB2 w - - 0 1"]
Different sources give different answers.
- 489
4
votes
2
answers
2k
views
Why does the 75 move rule apply when the game have a forced checkmate?
In this position for example White has a forced checkmate in 549:
[FEN "1n1k4/6Q1/5KP1/8/7b/1r6/8/8 w - - 0 1"]
How is it fair to terminate the game before White could ever force the win?
- 161
0
votes
1
answer
39
views
Python program for extracting games from PGN file based on tags (MacOS)
I would like to create a python script to extract games from a PGN file that is compressed using .pgn.zst, like the lichess.org database.
For example, one of the files is around 32GB compressed, and ...
3
votes
2
answers
74
views
Slav / Semi-slav Bf4 is bad?
In a recent game I played 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 (Semi-slav), then as White played Bf4 because I didn't know any theory. Lichess analysis board says this is a non-trivial opening ...
- 3,993
2
votes
1
answer
142
views
Did the Laws of Chess forget about double disambiguation?
When I was reading the Laws of Chess, I saw that there was a problem because, in Appendix C-10, it only talked about simple disambiguation. What about double disambiguation?
- 161
2
votes
1
answer
886
views
Since what year would small-scale cheating have given an advantage in e.g. the World Championship?
This is a purely hypothetical question that could give me some insight into chess history because I am by no means an expert in the latter.
From what year would e.g. the world champion or the ...
- 897
0
votes
0
answers
21
views
Venray Youth Tournament history
About 40 years ago, each year there was a big international youth tournament in Venray, Netherlands. Googling gave nothing (especially this should mean it doesn't exist any longer). Does anyone have ...
- 16.8k
4
votes
0
answers
111
views
Puzzles where the goal is to avoid being checkmated in x or fewer moves
Is there a name for puzzles where the goal is to avoid being checkmated in x moves?
An example is this puzzle:
[Title "White to play and avoid being mated on or before move 4 (there is a unique ...
- 826
1
vote
0
answers
72
views
Hunting for a particular piece of chess footage
I've been trying to find a particular clip which I remember from a while ago (or the game associated to this clip).
There was some commentary, I think part of a broadcast / commentary associated to ...
- 119
12
votes
7
answers
5k
views
Why not use computers to evaluate strength of players?
A computer like Stockfish can evaluate the rating performance of individual players based on a game. Why don't we take the average rating evaluation of a player's games to measure the player's ...
