Idea for free passer improving

[tomitank]

Hi all!

My idea:
Ignore the king as a blocker. (if have enemy majors behind a passed pawn)

blockers = all_pieces ^ us_king

Soon I will test this in tomitankChess 2.0, but wonder if you have any experience?

-Tamás

[zenpawn]

I do this in RM too, since, in general, it's a good thing to have your king in front of the pawn. I don't recall the exact results of the tests, but they confirmed this logic.

[tomitank]

it's a good thing to have your king in front of the pawn.

I was thinking about this:
The king is in chess, so the pawn can not move.
The king must move. So it's like he's not there.
(Or must be blocking with friendly pieces)

[tomitank]

After 1000 games (fix 8 depth)
v3 - basic
v3 - new idea

tomitankChessV3 - tomitankChessV4 : 498,0/1000 264-268-468 50% ±0

more testing is required.