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4
votes
4answers
150 views

In the opening stage, can we determine that one move is better than another by looking at winning percentage?

After 1.c4 Nf6 2. Nc3 g6, thousands of games have been played with the following two moves of white: 3.g3 and 3.e4. It seems that the winning percentage suggested that 3.e4 is clearly better than 3....
2
votes
3answers
165 views

Database program for statistics about mistakes

I wonder if there is an application that will help with statistics for my own games. Of course - there are applications (eg. Scid, Chessbase) that allow to make some statistics out of database - but ...
1
vote
2answers
402 views

chess win expectancy by material difference table or calculator

Houdini Chess engine is said to have a calibrated evaluation in which engine scores correlate directly with the win expectancy in the position. A +1.00 pawn advantage gives a 80% chance of winning the ...
1
vote
2answers
89 views

Meaning of move stats in opening databases

I naively thought that if I picked the biggest winning move (for example using white) in the database and kept picking moves that white would always win, but at some point the advantage for white ...
8
votes
5answers
973 views

In an opening tree on ChessBase, how can we fix the statistics so that transpositions are not taken into account in the total number of games?

In an opening tree (also called "opening explorer" or "openings book") on ChessBase 12, here are the statistics that we get after 1. Nf3 c5 : So it seems that after 1. Nf3 c5 White will play 2. e4 93%...
8
votes
2answers
486 views

What is the approximate number of unique positions added by each practical game of chess?

The average number of moves in a game of chess is about 40. This would be an average of about 80 positions in each game, but many positions are shared between games. More sharing occurs at the ...
29
votes
5answers
39k views

What is the average length of a game of chess?

I hope this is an appropriate question for this site as I've been wanting a reputable answer. Of course the length of games can vary wildly, but what is the expected number of moves until either a ...