Level 11 Perft statistics
Posted: Tue Sep 17, 2019 10:05 am
Hi everyone.
This is my first post, so be gentle..
TLDR; My "chess engine" has calculated full perft statistics for level 11. Is it of any interest to post on it the www.chessprogramming.org website?
The engine is a purely statistical engine, so no validation is done. All quantity, no quality.
It was born in Java, lived one day as NodeJS-version, converted to C, then assembly, then back to C after I realised my assembly coding skills was no match for the C-compilers when it comes to optimisation.
Speed wise, right now the engine churns through all possible boards (including level 8 for any boards in a check state on level 7), from level 0 to level 7 in 100 seconds on an 3,4Ghz i5 iMac, running on one thread. By splitting up results into work units the engine can run distributed on any number of cores & machines and the counts can be combined fairly easily.
Anyway, I have understood that to update the chessprogramming website, I need to go through Gerd Isenberg. I find it hard to track him down
So if these stats are of interest to CPW, I would be very thankful if anyone could give him a nudge in my direction.
Below are an example of stats output from the program.
It shows the same as the fields on the CPW Perft table, but has two differences.
One in the way Discovered&Double checks are counted. The way Alessandro Iavicoli's Ada Chess-engine does it, is by keeping Discovered check counts and Double check counts separate, mine don't just now, but I will adjust my engine to do the same as Ada Chess.
In addition, I keep track of checks that happened after a promotion, an en passant capture or a capture. Come to think of it, I should count how many check that arise from a castling as well.
Anyway. Even though I this is my first written post, I am an avid used of the CPW which is an invaluable tool for noob chess programmers like myself, and I would like to thank all past, current and future contributors for all the work that have been done.
Andreas Øverland
Oslo, Norway
0, N: 1, Caps: 0, EP: 0, Cast: 0, Prom: 0, Checks: 0, Disc: 0, Disc(promo): 0, Disc(capture): 0, Disc(ep): 0, Dbl: 0, Dbl(promo) : 0, Dbl(capture) : 0, Dbl(ep) : 0, Mates: 0, S.Mates: 0
1, N: 20, Caps: 0, EP: 0, Cast: 0, Prom: 0, Checks: 0, Disc: 0, Disc(promo): 0, Disc(capture): 0, Disc(ep): 0, Dbl: 0, Dbl(promo) : 0, Dbl(capture) : 0, Dbl(ep) : 0, Mates: 0, S.Mates: 0
2, N: 400, Caps: 0, EP: 0, Cast: 0, Prom: 0, Checks: 0, Disc: 0, Disc(promo): 0, Disc(capture): 0, Disc(ep): 0, Dbl: 0, Dbl(promo) : 0, Dbl(capture) : 0, Dbl(ep) : 0, Mates: 0, S.Mates: 0
3, N: 8902, Caps: 34, EP: 0, Cast: 0, Prom: 0, Checks: 12, Disc: 0, Disc(promo): 0, Disc(capture): 0, Disc(ep): 0, Dbl: 0, Dbl(promo) : 0, Dbl(capture) : 0, Dbl(ep) : 0, Mates: 0, S.Mates: 0
4, N: 197281, Caps: 1576, EP: 0, Cast: 0, Prom: 0, Checks: 469, Disc: 0, Disc(promo): 0, Disc(capture): 0, Disc(ep): 0, Dbl: 0, Dbl(promo) : 0, Dbl(capture) : 0, Dbl(ep) : 0, Mates: 8, S.Mates: 0
5, N: 4865609, Caps: 82719, EP: 258, Cast: 0, Prom: 0, Checks: 27351, Disc: 6, Disc(promo): 0, Disc(capture): 0, Disc(ep): 0, Dbl: 0, Dbl(promo) : 0, Dbl(capture) : 0, Dbl(ep) : 0, Mates: 347, S.Mates: 0
6, N: 119060324, Caps: 2812008, EP: 5248, Cast: 0, Prom: 0, Checks: 809099, Disc: 375, Disc(promo): 0, Disc(capture): 71, Disc(ep): 0, Dbl: 46, Dbl(promo) : 0, Dbl(capture) : 46, Dbl(ep) : 0, Mates: 10828, S.Mates: 0
7, N: 3195901860, Caps: 108329926, EP: 319617, Cast: 883453, Prom: 0, Checks: 33103848, Disc: 19654, Disc(promo): 0, Disc(capture): 3539, Disc(ep): 91, Dbl: 1628, Dbl(promo) : 0, Dbl(capture) : 1592, Dbl(ep) : 4, Mates: 435767, S.Mates: 0
This is my first post, so be gentle..
TLDR; My "chess engine" has calculated full perft statistics for level 11. Is it of any interest to post on it the www.chessprogramming.org website?
The engine is a purely statistical engine, so no validation is done. All quantity, no quality.
It was born in Java, lived one day as NodeJS-version, converted to C, then assembly, then back to C after I realised my assembly coding skills was no match for the C-compilers when it comes to optimisation.
Speed wise, right now the engine churns through all possible boards (including level 8 for any boards in a check state on level 7), from level 0 to level 7 in 100 seconds on an 3,4Ghz i5 iMac, running on one thread. By splitting up results into work units the engine can run distributed on any number of cores & machines and the counts can be combined fairly easily.
Anyway, I have understood that to update the chessprogramming website, I need to go through Gerd Isenberg. I find it hard to track him down
So if these stats are of interest to CPW, I would be very thankful if anyone could give him a nudge in my direction. Below are an example of stats output from the program.
It shows the same as the fields on the CPW Perft table, but has two differences.
One in the way Discovered&Double checks are counted. The way Alessandro Iavicoli's Ada Chess-engine does it, is by keeping Discovered check counts and Double check counts separate, mine don't just now, but I will adjust my engine to do the same as Ada Chess.
In addition, I keep track of checks that happened after a promotion, an en passant capture or a capture. Come to think of it, I should count how many check that arise from a castling as well.
Anyway. Even though I this is my first written post, I am an avid used of the CPW which is an invaluable tool for noob chess programmers like myself, and I would like to thank all past, current and future contributors for all the work that have been done.
Andreas Øverland
Oslo, Norway
0, N: 1, Caps: 0, EP: 0, Cast: 0, Prom: 0, Checks: 0, Disc: 0, Disc(promo): 0, Disc(capture): 0, Disc(ep): 0, Dbl: 0, Dbl(promo) : 0, Dbl(capture) : 0, Dbl(ep) : 0, Mates: 0, S.Mates: 0
1, N: 20, Caps: 0, EP: 0, Cast: 0, Prom: 0, Checks: 0, Disc: 0, Disc(promo): 0, Disc(capture): 0, Disc(ep): 0, Dbl: 0, Dbl(promo) : 0, Dbl(capture) : 0, Dbl(ep) : 0, Mates: 0, S.Mates: 0
2, N: 400, Caps: 0, EP: 0, Cast: 0, Prom: 0, Checks: 0, Disc: 0, Disc(promo): 0, Disc(capture): 0, Disc(ep): 0, Dbl: 0, Dbl(promo) : 0, Dbl(capture) : 0, Dbl(ep) : 0, Mates: 0, S.Mates: 0
3, N: 8902, Caps: 34, EP: 0, Cast: 0, Prom: 0, Checks: 12, Disc: 0, Disc(promo): 0, Disc(capture): 0, Disc(ep): 0, Dbl: 0, Dbl(promo) : 0, Dbl(capture) : 0, Dbl(ep) : 0, Mates: 0, S.Mates: 0
4, N: 197281, Caps: 1576, EP: 0, Cast: 0, Prom: 0, Checks: 469, Disc: 0, Disc(promo): 0, Disc(capture): 0, Disc(ep): 0, Dbl: 0, Dbl(promo) : 0, Dbl(capture) : 0, Dbl(ep) : 0, Mates: 8, S.Mates: 0
5, N: 4865609, Caps: 82719, EP: 258, Cast: 0, Prom: 0, Checks: 27351, Disc: 6, Disc(promo): 0, Disc(capture): 0, Disc(ep): 0, Dbl: 0, Dbl(promo) : 0, Dbl(capture) : 0, Dbl(ep) : 0, Mates: 347, S.Mates: 0
6, N: 119060324, Caps: 2812008, EP: 5248, Cast: 0, Prom: 0, Checks: 809099, Disc: 375, Disc(promo): 0, Disc(capture): 71, Disc(ep): 0, Dbl: 46, Dbl(promo) : 0, Dbl(capture) : 46, Dbl(ep) : 0, Mates: 10828, S.Mates: 0
7, N: 3195901860, Caps: 108329926, EP: 319617, Cast: 883453, Prom: 0, Checks: 33103848, Disc: 19654, Disc(promo): 0, Disc(capture): 3539, Disc(ep): 91, Dbl: 1628, Dbl(promo) : 0, Dbl(capture) : 1592, Dbl(ep) : 4, Mates: 435767, S.Mates: 0