This repository contains a collection of books which may be used for chess engine development.
The following table gives a brief overview of the available books.
| book | total | white | black | min_depth | max_depth |
|---|---|---|---|---|---|
2moves_v1.epd |
40457 | 40457 | 0 | 4 | 4 |
2moves_v2.pgn |
12092 | 12092 | 0 | 4 | 4 |
3moves_FRC.epd |
126113 | 126113 | 0 | 6 | 6 |
4mvs_+90_+99.epd |
635 | 635 | 0 | 8 | 8 |
6mvs_+90_+99.epd |
2933 | 2933 | 0 | 12 | 12 |
8moves_v3.pgn |
34700 | 34700 | 0 | 16 | 16 |
8mvs_+90_+99.epd |
8533 | 8533 | 0 | 16 | 16 |
8mvs_big_+80_+109.epd |
25857 | 25857 | 0 | 16 | 16 |
bjbraams_chessdb_198350_lines.pgn |
198350 | 154148 | 44202 | 1 | 16 |
closedpos.epd |
165735 | 165735 | 0 | 8 | 8 |
DFRC_4852_v1.epd |
294466 | 160639 | 133827 | 0 | 3 |
DFRC_openings.epd |
921600 | 921600 | 0 | 0 | 0 |
Drawkiller_balanced_big.epd |
15962 | 15962 | 0 | 28 | 28 |
endgames.epd |
157846 | 74355 | 83491 | 23 | 652 |
FRC_openings.epd |
960 | 960 | 0 | 0 | 0 |
hybrid_book_beta.epd |
28054 | 28054 | 0 | None | None |
noob_2moves.epd |
7314 | 7314 | 0 | 4 | 4 |
noob_3moves.epd |
150932 | 150932 | 0 | 6 | 6 |
noob_4moves.epd |
1837365 | 1837365 | 0 | 8 | 8 |
noob_5moves.epd |
455287 | 455287 | 0 | 10 | 10 |
popularpos_lichess.epd |
200000 | 99953 | 100047 | None | None |
popularpos_lichess_v2.epd |
200000 | 100440 | 99560 | None | None |
popularpos_lichess_v3.epd |
200000 | 102952 | 97048 | None | None |
stalemates_200d30_v1.epd |
10796 | 7978 | 2818 | 12 | 479 |
startpos.epd |
1 | 1 | 0 | 0 | 0 |
UHO_4060_v1.epd |
246759 | 246759 | 0 | 16 | 16 |
UHO_4060_v2.epd |
242201 | 242201 | 0 | None | None |
UHO_4060_v3.epd |
242201 | 242201 | 0 | 16 | 16 |
UHO_4060_v4.epd |
241670 | 241670 | 0 | 16 | 16 |
UHO_Lichess_4852_v1.epd |
2632036 | 1457270 | 1174766 | 2 | 16 |
UHO_MEGA_2022_+110_+149.pgn |
321412 | 321412 | 0 | 16 | 16 |
UHO_XXL_+0.80_+1.09.pgn |
261028 | 261028 | 0 | 16 | 16 |
UHO_XXL_+0.90_+1.19.pgn |
223070 | 223070 | 0 | 16 | 16 |
UHO_XXL_+1.00_+1.29.pgn |
186098 | 186098 | 0 | 16 | 16 |
UHO_XXL_2022_+100_+129.pgn |
284035 | 284035 | 0 | 16 | 16 |
UHO_XXL_2022_+110_+139.pgn |
253847 | 253847 | 0 | 16 | 16 |
UHO_XXL_2022_+120_+149.pgn |
226629 | 226629 | 0 | 16 | 16 |
(Data sourced from books.json.)