My test for Mayhem 2.9-x64-(SF)NNUE

[Sylwy]

Test conditions:
-TC=4'+2"
-Hash=256 MB
-GUI: Arena 3.5.1
-Books: performance.bin (for Mayhem 2.9-x64-NNUE) & Perfect_2010.abk (for Rhetoric_1.4.3_x64_popcnt)
-default settings for both engines
-1 thread-CPU=Intel i5-7400-3GHz (Kaby Lake)
-TBS: none
-OS: Windows 10 Home.





Rhetoric 1.4.3 x64 has 2807 Elo points (CCRL Blitz).
Expected rating for Mayhem 2.9-x64-(SF)NNUE is around 2800 Elo points. The best Mayhem NNUE ever.
My rating for Mayhem 2.5-x64-(SF)NNUE is around 2765 Elo points (after a single match test vs. Rhetoric 1.4.3 x64).
Mayhem 0.50-x64-(SF)NNUE has around 2790 Elo points (in my single match test vs. Hakkapeliitta TCEC v2 x64).

[JohnWoe]

Thanks again testing Mayhem!

49% score ~2800 Elo performance is excellent against strong opponent!

Mayhem 2.9 is the strongest Mayhem just like I wondered. Lots of bugs were fixed. Mayhem uses RAM optimally. Only underpromotion to N+ is allowed in trees. LMR + Null move are now super aggressive. Pawns 6+7the ranks are studied carefully. Mayhem is searching pretty deep. Especially endgame problems were fixed. Tho there are still problems with EG. Not perfect. In search there's probably easy +200 Elo to grab.

Actually in my tests Mayhem 2.9 was a total beast.
OliThink, Velvet, and co won't have a good time with Mayhem 2.9