# Questions tagged [statistics]

Questions about game statistics, e.g. the winning percentage of a "line," the probability of some event occurring in a game, or player statistics.

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### Is testing an opening by having a computer play against itself viable?

Recently, I got into a brief argument with a colleague when I mentioned that I wanted to use an engine playing against itself to generate a larger sample size for a rare sideline. His argument was ...
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### How do you set up two engines to play each other on a cloud server?

I am exploring a semi-novel idea in the London system, where I play 2...b5!? after 1. d4 Nf6 2. Bf4 A main line goes 3.Nf3 Bb7 4.e3 and now: 4...a6 5.Bd3 e6 or Nh5 4...a6 5.c4 bxc4/b4 4...b4 5.Bd3 e6/...
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### What do we know about the statistics of 1-vs-team chess games, like Kasparov vs The World?

Kasparov vs the World was a chess game where Gary Kasparov played against many people on the internet. Gary won. I am basically wondering if 1-vs-many chess games have been done systematically, and if ...
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### How does the Israel Chess Federation (ICF) update ratings for players who no longer play in Israel?

I just seen an interesting statement about ICF ratings: When I moved to England and stopped playing ICF rated chess I was curious as to what would happen to my ICF rating. It stayed in synch with my ...
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### Difference between national and international rating

For extreme cases see here, but I'm interested in statistical averages. The most skewing factor, as already mentioned there, should be underrated players, which simply haven't played against the "...
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### Is there a way to figure out what the average number of moves would be if all games were played to completion?

Is there a way to figure out the average number of moves of a game? Looking at games on record, it is 40 or so. OK, but what about in pure chess sense? For instance, I was looking at game in which one ...
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### Correlation between opening usage

Is there statistical analysis of which openings players play as Black when they play a certain opening as White and vice versa? For example, is it the case that people that play 1. ..c6, often leading ...
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### Is hyperbullet or bullet more common in online gameplay?

On Lichess, the shortest form of bullet is named hyperbullet. It is essentially 30-second chess. Standard bullet is 1 to 3 minutes. It is difficult to assess popularity without invoking opinion. ...
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### What's the average total time for a game of bullet chess?

Bullet chess gives each player 1 minute to make all their moves - if that minute passes and they haven't checkmated their opponent, they lose (or if insufficient material, a draw). Since chess has 2 ...
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### Has anyone done a correlation of castling with winning and losing?

I saw this question: How often does castling occur in grandmaster games? The statistics are interesting. The answer states that they do so about 90% of their games. So, the move seems pretty valuable....
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### FIDE Rating Distribution

This answer has a link to the Lichess blitz rating distribution which looks like this: It looks like a good approximation to a normal distribution, perhaps slightly skewed to the upper half, and has ...
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### Can the "bishop pair advantage" be supported by statistics?

I heard a lot about the advantage of having a bishop pair and I am interested in the statistics about this. More specifically, if we collect a huge number of games (master games only, or games ...
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1 vote
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### Average number of moves until checkmate for two players of unequal strenth

Suppose a game is played, until checkmate, between players of unequal strength, say 1800 vs 2800. What would be the average number of moves be for, say, 1000 games? I also ponder 2000 vs 2800 and 2200 ...
1 vote
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### As GMs get older, does their age affect their Classical, Rapid and Blitz ratings equally?

As GMs age beyond their prime, their ratings will likely drop in Classical, Rapid and Blitz chess. If we compare the mean Elo ratings of older and younger GMs across all 3 time controls, does it show ...
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### What is white's increased advantage in chess90 as compared to chess870? (Chess960 can be split into 2 subsets, chess90 and chess870)

Here, it is shown 90 of 960 positions involve having to move a rook on 1 side in order to castle on the other side (unless the rook is somehow captured or something). These 90 positions come from 18 ...
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### An abstract Top 1 player rating vs time

How the highest Elo rating has been changing over time? Is there such an abstract data? Preferably FIDE rating. I've been trying to find a graph or a table, but all I can find is a list of peak ...
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### Why don't these statistics disprove white's supposed larger (practical?) advantage in chess960?

I've read that, at least theoretically, white has a larger advantage in 9LX as compared to chess. (See appendix.) This seems to be assumed in practice to the point that in some 9LX tournaments, such ...
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### Generalise 'grandmaster games (...) castle opposite sides and the queenside players loses?' to finding games based on themes

I would like to generalise What are examples of grandmaster games where both Black and White castle opposite sides and the queenside players loses? Question: Is there a way I can search this up myself?...
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### Distribution of Elo ratings

Danger! Only for math buffs! As we all know, Elo is Gaussian. In theory. Except it isn't. But my question is not about that distribution. Your Elo might also list a second number: the number of ...
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### What's the idea of 'all rook endgames are drawn' ? i think opposite coloured bishop endgames and even queen endgames are more drawish

Quote: 'all rook endgames are drawn', 'All rook endings are drawn' or 'All rook and pawn endings are drawn.' For queen endgames, Karsten Müller even gives a way of visualising this (not quite Karsten ...
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### On average, how many pawns are there at the start of the endgame?

Question: On average, how many pawns are there at the start of the endgame? To answer: You can choose your definition of the endgame as long as you can show a credible reference that supports your ...
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### Rating system (glicko, elo, etc): is 'predict the outcome of games' the same thing as 'reduce the number of upsets'?

From Lichess page 'Chess rating systems': Question: Which rating system is best? Answer: The purpose of rating systems is to predict the outcome of games. Therefore, they can be objectively better ...
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### Opening and endgame experts in chess

There are famous players who are called endgame experts ("opening expert" IMHO is less used), e.g. Rubinstein. Now obviously, to be a GM, you have to know a bit of all game phases, and a ...
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### How do I find data to determine records like the youngest person to obtain a certain title?

A. Background: Under Mobeus Zoom's suggestion here: List of records for youngest superGMs since 1950? (or 1970 or whenever FIDE started rating people. or basically after 2700s after Fischer) (this is ...
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### List of records for youngest WFMs (woman FIDE masters) since 1950 (or whenever)? [duplicate]

On Wiki, we have the List of youngest grandmasters since 1950. What about WFMs (woman FIDE masters) instead of GMs? Note 1: I really mean to ask about WFMs (females who obtain the female exclusive ...
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### List of records for youngest WCMs (woman candidate masters) since 1950? [duplicate]

Re the close: If it was really a duplicate then why didn't Brian Towers♦ answer on the other post? Checkmate! On Wiki, we have the List of youngest grandmasters since 1950. What about WCMs (woman ...
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### List of records for youngest female international masters since 1950? [duplicate]

Note: I really mean female IMs and not WIMs All IM version: List of records for youngest international masters since 1950? WIM version: List of records for youngest WIMs (woman international masters) ...
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### List of records for the youngest FIDE masters since 1950?

Edit based on answer given by blunderchess1236 awhile ago: I'm not looking for just 1 person like who most recently attained the youngest (Alekhine Nouri). I'm asking also who held the record for ...
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### List of records for youngest superWGMs since 1950?

On Wiki, we have a list for List of youngest grandmasters since 1950. What about superWGMs (any female player who has reached 2500+ or has become GM, whether or not they were actual WGMs so as to ...
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### List of records for youngest superGMs since 1950? (or 1970 or whenever FIDE started rating people. or basically after 2700s after Fischer)

On Wiki, we have the List of youngest grandmasters since 1950. What about superGMs (defined anyone who has reached 2700+ peak FIDE standard) instead of GMs: where can I find a list for the youngest to ...
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### List of records for youngest female grandmasters since 1950?

On Wiki, we have a list for List of youngest grandmasters since 1950. What about female GMs (really female GMs and not WGMs) instead of GMs? I guess the list ends with Judit Polgar, Koneru Humpy and ...
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### Are all female grandmasters alive (as of the date of this post, 2021Sep01)?

Really female GMs and not WGMs. I notice here there's a 'deceased' list for female IMs but none for female GMs. Is it really the case that there are only 38 females awarded GM title in history and ...
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### What is the mean and standard deviation for men's and then women's standard FIDE ratings for those 2000 and above?

From this answer, the unconditional means and standard deviations are Female Mean = 1505, standard deviation = 339 Male Mean = 1675, standard deviation = 346 What about the case for ratings of 2000+ ? ...
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### At what age do master level players (2200+) reach their peak?

We are surprised that players like Boris Gelfand and Vishy Anand can/could still play with the best in the world in their 40's and 50's. Are we right to be surprised? On average at what age do strong ...
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1 vote
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### What is the most number of blunders in a 2100+ game?

Obviously any move (starting at a given position) may be a blunder, see Kh3 Ra4 Nf5 - Kh1 Rf2 where both sides may miss a mate in one until kingdom come. It might be amusing to watch two engines ...
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### List of female chess players by their peak FIDE rapid rating

Similar to these questions: List of female chess players by peak FIDE rating List of female chess players by peak FIDE rating with countries? List of chess players by their peak FIDE blitz rating ...
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### List of chess players by their peak FIDE rapid rating

Similar to these: List of female chess players by peak FIDE rating List of female chess players by peak FIDE rating with countries? List of chess players by their peak FIDE blitz rating List of ...
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### List of female chess players by their peak FIDE blitz rating

Similar to these: List of female chess players by peak FIDE rating List of female chess players by peak FIDE rating with countries? List of chess players by their peak FIDE blitz rating List of ...
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### List of female chess players by peak FIDE rating with countries?

same question as here but with countries please. hopefully we can have a list as close to the original wiki page as possible. I'll start: 1 - Hungary - Judit Polgar - 2735 - 2005-07 - 1976 - N/A - ...
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### List of chess players by their peak FIDE blitz rating

I've come across a list of the highest FIDE ratings ever achieved by all 2700+ players in the 2700chess.com: This shows all the players above 2700 in classical ordered by their FIDE peak rating. It ...
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### When playing a two-game match, is it better to have white in the first game?

Many rapid and blitz tournaments use a multigame match system in the elimination rounds. What statistics are there on how frequently the player with White in the first game wins? Is there a ...
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### The most often played chess game

Offhand, I say the Shepherd's Mate. But let us just consider "serious" tournament play. Still, the game must be rather short to be repeated extremely often. Could be a "Will they ever ...
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### Number of games ever played in history?

Obviously, an exact answer can't be given, but we can't count all electrons in the universe either and physicists still gave an answer probably correct by an order of magnitude. Let's specify: Only ...
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### Why do you see peaks on the elo distribution?

I was observing the elo distribution in Lichess and noticed peaks around rounded numbers elos ratings for medium to high rated players. This is consistent in Bullet, Blitz, Rapid games and not so much ...
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### How many 2200+ FIDE rated players are there?

Are there any sources for the recent numbers of players rated over 2200 byFIDE?
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### What are the biggest events in chess by viewership?

I realise chess viewerships have skyrocketed due to organic growth in popularity, and especially due to more people being stuck indoors in the last year. Are there statistics on how many viewers each ...
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### How do convert/parse/extract data from a PGN into a spreadsheet/google sheet/excel file?

Sequel to this question: Live statistics chess960 from chess.com? So suppose I go to like https://api.chess.com/pub/player/gmwso/games/2020/12 or https://api.chess.com/pub/player/gmwso/games/2020/12/...
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### What is the physical response to a high level chess game?

Chess is used as an example of how the body can be influenced purely by brain activity: In the middle of a chess Grand Master tournament these people are maintaining blood pressure for 6 hours' ...
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### Which countries have the most GMs per capita?

This interesting site has a "World map of chess grandmasters" which looks like this: Apart from the fact that Russia is very wide (it looks like it crosses 10 time zones), it looks like ...
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