World Draughts Forum

Hi Bert,

Interesting. FYI, the latest version of GWD use 'sort moves randomly' as the 'policy network' combined with very aggressive LMR. The problem with very aggressive LMR was that GWD often got 'stuck in the wrong variation', but the 'sort moves randomly' compensates for that. GWD now also ...

All 5x3 EGTBs are done, the maximum mate is still 289 ply. The results for 5 men vs 3 men are:


generated 0wX-5wO-0bX-3bO.dtm: material=0 5 0 3 positions=12605352830 maximum-index=12605352829 passes=265 maximum-dtm=266 threads=64
self-consistency: passes=0 updates=0/0
final read-only consistency ...

The next large EGTB is also ready:

generated 3wX-2wO-1bX-2bO.dtm: material=3 2 1 2 positions=589711425600 maximum-index=589711425599 passes=287 maximum-dtm=286 threads=64
self-consistency: passes=0 updates=0/0
final read-only consistency verification: SKIPPED — NOT VERIFIED (mode=none)
consistency ...

I have added where the conversions occur to dtm_pv (move number/ply depth/piece count):

{1/289/5x3 122/-46/5x2 139/13/4x2 139/-12/4x1 145/1/2x1}

So you must defend 122 moves very accurately.

GW

Hi,

I was not too happy with 'our' Tensorflow training script (written by ChatGPT and me) for training GWD's neural network. It often broke after a Tensorflow update, I am running Tensorflow out of a Docker container so that I can revert easily. It was not very fast and for some reason training of ...

The longest win:

dtm_pv W:W32,47,K25,K30,K43:B5,K36,K45
1. {289} 25-14 {-288} 36-4 2. {287} 30-35 {-286} 4-10 3. {285} 35-19 {-284} 10-4
4. {283} 19-28 {-282} 45-1 5. {281} 28-50 {-280} 1-40 6. {279} 32-28 {-278} 40-1
7. {277} 43-32 {-276} 1-40 8. {275} 32-21 {32-16} {-274} 40-49 9. {273} 21-12 ...

We are at mate in 289:


generated 3wX-2wO-2bX-1bO.dtm: material=3 2 2 1 positions=656372498100 maximum-index=656372498099 passes=289 maximum-dtm=289 threads=64
self-consistency: passes=0 updates=0/0
final read-only consistency verification: SKIPPED — NOT VERIFIED (mode=none)
consistency current-DB ...

5x3 is progressing nicely, 9 EGTBs have been generated:

5wX-0wO-3bX-0bO.dtm
5wX-0wO-2bX-1bO.dtm
5wX-0wO-1bX-2bO.dtm
5wX-0wO-0bX-3bO.dtm
4wX-1wO-3bX-0bO.dtm
4wX-1wO-2bX-1bO.dtm
4wX-1wO-1bX-2bO.dtm
4wX-1wO-0bX-3bO.dtm
3wX-2wO-3bX-0bO.dtm

GW

The compression ratios for the DTM files:


All 15 canonical 4×4 DTM files on 8p record **Zstd level 1** and DTM format v4 (16-bit values). Their combined file size is **2.335 TB**, versus **16.181 TB uncompressed** at two bytes per side: **14.43% of raw size, or 6.93:1**. These ratios include file ...

The longest win:

dtm_pv "W:W21,39,47,50:B5,7,10,35"
1. {199} 39-33 {-198} 10-14 {10-15} 2. {197} 33-28 {-196} 14-19 {14-20}
3. {195} 28-22 {-194} 19-24 4. {193} 21-17 {22-18} {-192} 24-29 {24-30}
5. {191} 22-18 {-190} 29-33 {29-34} 6. {189} 17-12 {-188} 7-11 7. {187} 12-8
{-186} 33-38 {33-39} 8 ...

And the final 4 men against 4 men. This one took only 22 minutes.

generated 0wX-4wO-0bX-4bO.dtm: material=0 4 0 4 positions=15802050675 maximum-index=15802050674 passes=199 maximum-dtm=199 threads=64
self-consistency: passes=0 updates=0/0
final read-only consistency verification: SKIPPED — NOT ...

The next one:

generated 1wX-3wO-0bX-4bO.dtm: material=1 3 0 4 positions=70647183250 maximum-index=70647183249 passes=199 maximum-dtm=199 threads=64
self-consistency: passes=0 updates=0/0
final read-only consistency verification: SKIPPED — NOT VERIFIED (mode=none)
consistency current-DB cache ...

The next one:

generated 1wX-3wO-1bX-3bO.dtm: material=1 3 1 3 positions=315948485600 maximum-index=315948485599 passes=199 maximum-dtm=199 threads=64
self-consistency: passes=0 updates=0/0
final read-only consistency verification: SKIPPED — NOT VERIFIED (mode=none)
consistency current-DB cache ...

The next one:

generated 2wX-2wO-0bX-4bO.dtm: material=2 2 0 4 positions=118155352700 maximum-index=118155352699 passes=191 maximum-dtm=190 threads=64
self-consistency: passes=0 updates=0/0
final read-only consistency verification: SKIPPED — NOT VERIFIED (mode=none)
consistency current-DB cache ...

'We' have also added a PV option:

dtm_pv "W:W47,50,K9,K44:B10,16,35,K12"

dtm_pv "W:W47,50,K9,K44:B10,16,35,K12"
1. 44-6 {193} 12-1 {-192} 2. 9-3 {191} 1-23 {-190} 3. 6-1 {189} 23-46 {-188}
4. 3-12 {187} 46-28 {-186} 5. 1-6 {185} 28-46 {-184} 6. 12-17 {183} 46-14 {-182}
7. 6-1 {181} 14-3 {-180} 8 ...