what is this
You have a chess repertoire pgn file and want to know where it could be improved. This scripts checks your oponents responses against the most played moves on the lichess database.
usage
pip install bunseki
# whites perspective, missing moves musst have been played at least 500 times
# utility is the probability of seeing the top opponent move
# we sort by that, cutoff is defined by -q
bunseki -w 1 -i lichessstudy_white.pgn -m 500 -q .5
# to check against lichess user database instead of the masters, e.g.:
-d 1 -s 1600 1800 -t blitz rapid
example
$bunseki -w 1 -i lichessstudy_white.pgn -m 500 -q 2 -d 1
possition frequency:35.68 utility:6.15 <- possition proability and utility of learning a new move
♖ ♘ ♗ ♕ ♔ ♗ ♘ ♖ <- colors conveniently inverted for terminal usage
♙ ♙ ♙ ♙ ♙ ♙ ♙
♙
♟
♞
♟ ♟ ♟ ♟ ♟ ♟ ♟
♜ ♞ ♝ ♛ ♚ ♝ ♜
Nc6 6235325(66) OK [50, 4, 44]
d6 1619060(17) !! [52, 4, 42] <- this move is missing in the db
Nf6 869610(9) OK [49, 4, 45]
1. e4 e5 2. Nf3 *
rnbqkbnr/pppp1ppp/8/4p3/4P3/5N2/PPPP1PPP/RNBQKB1R b KQkq - 1 2
https://lichess.org/analysis/rnbqkbnr/pppp1ppp/8/4p3/4P3/5N2/PPPP1PPP/RNBQKB1R_b_KQkq_-_1_2
$bunseki_repobuilder -i black_auto.pgn -w 0 -u 2 -d 1 -c 0
1. e4 ( 1. d4 Nf6 2. Nf3 ( 2. c4 e6 3. Nc3 ( 3. Nf3 Bb4+ ) ( 3. g3 Bb4+ ) 3...
Bb4 ) ( 2. Bf4 g6 ) 2... e6 3. c4 Bb4+ ) ( 1. c4 Nf6 2. Nc3 g6 ) ( 1. Nf3
Nf6 ) 1... c5 2. Nf3 ( 2. Bc4 e6 ) ( 2. Nc3 Nc6 ) ( 2. d4 cxd4 3. c3 dxc3 4.
Nxc3 Nc6 ) ( 2. f4 d5 ) ( 2. c3 Nf6 3. e5 Nd5 ) 2... Nc6 3. Bb5 ( 3. d4 cxd4
4. Nxd4 Nf6 5. Nc3 ( 5. Nxc6 bxc6 ) 5... e5 6. Ndb5 ( 6. Nb3 Bb4 ) ( 6. Nxc6
bxc6 ) 6... d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 ) ( 3. Bc4 e6 ) ( 3. c3 Nf6 )
( 3. Nc3 g6 ) 3... g6 4. O-O Bg7 5. Re1 e5 *
# -u 2 adds all moves that appear with frequency .02 to the moves in an existing pgn
# automatically choosing moves for our side
# there is also an argument to start from a certain ply count to obtain a file for
# one specific opening
strange stuff
- i would have liked to use UCI notation to communicate between python-chess and lichess but they use different notation for castles.
terminal printing
see makequiz on how to print theese:
