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Miloslav Ciz 2024-10-21 15:31:36 +02:00
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@ -155,6 +155,8 @@ What is **the most typical game**? We can try to construct such a game from a ga
23. Qa3 Qc5 24. Qb3 d5 25. Bf1
```
What's **the best and worst opening move according to the engines?** (Please remember that engine best move is not necessarily the best move for a human, see the note on perfect play above.) According to Lichess cloud database (accessible via public API) that stores stockfish evaluations for various positions, E4 leads to the best evaluated position (18 centipawn, evaluated to depth 70; the move is also seen by many as best for humans), closely followed by D4 and Nf3 (both 17 centipawn, depth 47 and 56) and C4 (12 centipawn, depth 59). Worst move here is by far g4 with evaluation -96 centipawn (depth 52) -- almost a whole pawn, i.e. stockfish says that by playing this move you basically just throw away your pawn immediately. Another bad move is apparently f3 (-76, depth 40), Nh3 (-42), Na3 (-33), b4 or h4 (both -28).
What is **the rarest move**? Some [YouTube](youtube.md) video tried to investigate this with the help of Lichess database. Things that immediately come to mind like en passant checkmates and checkmates by promoting to a knight are rare but not insanely rare. A crazily rare kind of move, which only appeared ONCE in the whole database, was a doubly disambiguatated (i.e. with the necessary specification of both rank and file of the bishop) checkmate by a bishop (specifically Bf1g2#, occurring in a 2022 game) -- this is rare because to need a double disambiguation for a bishop move it is necessary to underpromote two pawns to a bishop and then place them correctly. Yet rarer moves, which NEVER appeared in the database, were a doubly disambiguated knight checkmate with capture and doubly disambiguated bishop checkmate with capture, latter of which was judged less likely and therefore probably the rarest move ever.
Anyway, you can try to derive your own stats, there are huge free game databases such as the Lichess [CC0](cc0.md) database of billions of games from their server.