TalkChess.com

[Charles Roberson]

In this position, I coded Telepath to give bonus points for the rooks being on a semi-open file, a few more bonus points for being on a
semi-open file near the opposing king where it is the opponents pawns that are the reason it being semi-open (IOW, the rooks are attacking).

As a human chess player, I consider the bishops as mobile and temporarily blocking the rooks, so the rooks must get a bonus (small one). This helps the program position the rooks there instead of another semi-open file elsewhere. Given the bonus is relatively small, points are gained by moving the bishops and getting direct attacks.

The OLD chess axiom that applies here is "... don't move the pawns on the side where you are being attacked ...". Telepath plays ...Nf6 after 21 ply.