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I thought having the King on c6, like so:
8/k1P5/2K5/8/8/8/8/8 w - - 0 1

would also force white to promote to a rook. And while it is faster (DTM2) - 1. c8=R Ka6 2. Ra8# , you can still safely promote to a queen after 1. Kd7 Kb6 2. c8=Q ...

xr_a_y wrote: ↑

Fri May 03, 2019 4:40 am

pgn-extract can handle .ctg file ?

No, I don't believe so. I don't use chessbase, but from my understanding, ctg is a book file (analogous to polyglot bin opening books), not a database (cbh)?

I have never used it before, but I believe Komodo has an option to save Hash to a file to be able to load for later use.
I think in theory, this is what you are looking for?

Same question ! is there a command line tool somewhere ? Since I posted this, I learned about using the --plylimit option flag from pgn-extract. In theory, you could successively use pgn-extract to first 1. Limit Ply (--plylimit), Remove All tags (--notags) 2. Remove Duplicates (-D), Add 7-tag Rost...

I"m on mac. i use xboard for mac. My understanding is it is basically code up to date with HG Mueller's winboard these days. I use it to run an engine on an ics and for my own connection now on FICS. Of course there is other mac software i'm sure. On chessclub.com i use my java Lantern Chess interf...

The fen you posted is wrong. You are missing the bishop on g5. It should instead be:

Kn5N/p1p1R3/r3b3/3p1kBp/1N1PrP2/3Qp1nP/2B5/6q1 w - -

For some reason, there are two boards on the website you posted, and one has the bishop on g5, and the other doesn't. That is likely the problem.

Hi all, I often find opening books in pgn format, such as Balsa Opening Suite for example: https://sites.google.com/site/computerschess/balsa-opening-test-suite Does anyone know if there is a utility to make something similar, from a database of chess games? Essentially polyglot, but remaining in pg...

Giraffe Chess engine also has a simple python script for this within in it's source code, found here:

https://bitbucket.org/waterreaction/gir ... ew-default

unless it is chess 960. Then you could have all castling rights still

Nice work. Thank you for your efforts. Can't wait for the mac (bmi2 build) release!