New answers tagged database
7
As kentdjb already noted, there is no variation with that exact position which has an ECO entry.
But it happened in sub lines of some ECO codes. I did a search on this database (only contains GM games and games before 1900).
Both pgn-extract and this CQL query ...
cql() Ra1 Nb1 Bc1 Qd1 Ke1 Bf1 Ng1 Rh1 Pa2 Pb2 Pc3 Pd4 Pe4 Pf3 Pg2 Ph2
... find 40 results.
...
7
Using my free, open source pgn-extract program you can specify a grep-like FEN pattern to be searched for in a PGN file of games. The program comes with a file of opening lines (eco.pgn) so a search such as:
pgn-extract --fenpattern "*/*/*/*/3PP3/2P2P2/PP4PP/RNBQKBNR" eco.pgn
would output any matches along with the associated ECO information in ...
0
Wikipedia says TT is Transposition Table...
When the search encounters a transposition, it is beneficial to 'remember' what was determined last time the position was examined, rather than redoing the entire search again. For this reason, chess programs have a transposition table, which is a large hash table storing information about positions previously ...
2
Python has a pgn parser as part of its chess library.
https://python-chess.readthedocs.io/en/latest/
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