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New version chess engine: Tcheran 5.1

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Tcheran - UCI chess engine  Author: Jonathan Gilchrist
Rating Chess Engines Diary CEDR=2242

If you want to know what the ranking of the Tcheran engine is, we encourage you to visit the website with the monthly updated CEDR ranking - RATING page.

v.5.1:
Evaluate passed pawns (38.30 +- 13.27)
Don't consider mobility for squares that are attacked by opponent pawns (14.90 +- 7.93)
Misc
Determine the evaluation coefficients in the main eval module, removing the need for a side-by-side impl in the tuner

Elo   | 44.45 +- 8.40 (95%)
Conf  | 8.0+0.08s Threads=1 Hash=16MB
Games | N: 4102 W: 1656 L: 1134 D: 1312
Penta | [129, 348, 747, 526, 301]
Elo   | 41.59 +- 16.02 (95%)
Conf  | 40.0+0.40s Threads=1 Hash=128MB
Games | N: 1024 W: 381 L: 259 D: 384
Penta | [29, 88, 184, 154, 57]


Tcheran 5.0 vs other engines:
SF-PRO 04.12.20240/4-44 Games
Dark SisTer 8.00/4-44 Games
Obsidian dev-14.07 SE0/4-44 Games
Halogen 12.12.3 JA0/4-44 Games
SF-PRO2 04.12.20240/4-44 Games
Stockfish dev-202411220/4-44 Games
Stockfish 20241122 Ivec0/4-44 Games
Cool Iris 13.900/4-44 Games
Clover 8.10/4-44 Games
Dark SisTer PB 0711240/4-44 Games
Berserk 20241119 SE0/4-44 Games
Big Yuli GM 2210240/4-44 Games
Cdrill 20002/2+22 Games
Turbulence v4 0.0.3 JA2/2+22 Games
Aurora 1.16.22/2+22 Games
Byte-knight 1.0.02/2+22 Games
Cfish 13 JA2/2+22 Games
Omelette 1.0 JA2/2+22 Games
Lunarr 2.1.12/2+22 Games
Dual 0.2.62/2+22 Games
Turbulence v4 0.0.31.5/2+12 Games

 

Sample batch of this engine:

Partia mi si� podoba�a (ChessBase 16)

ChessBase

Tcheran 3.0–StoneChess 2024-09-131–0B002024.09.14.NewEnginesTest1.32Chess Engines Diary17.09.2024
[%evp 0,72,19,31,42,25,25,33,56,29,66,76,56,24,36,21,11,4,-5,-3,16,4,10,-56,-5,-36,-18,-61,-61,-18,-15,-1,7,3,-6,-10,5,-13,9,3,10,13,10,49,46,43,67,31,56,45,49,47,71,43,90,58,61,73,114,133,184,186,153,187,235,243,654,652,873,1006,2044,2497,29979,29984,29985] 1.e4 c6 2.d4 d5 3.e5 f6 4.f3 g5 5.h3 g7 6.b5 h6 7.0-0 0-0 8.e1 g4 9.hxg4 xg4 10.xc6 bxc6 11.e6 d6 12.e2 f5 13.c3 c5 14.c2 xf3 15.dxc5 c6 16.xf5 e4 17.h3 xc5 18.e3 b5 19.d2 g6 20.b3 d3 21.f3 c6 22.ac1 a6 23.a4 fb8 24.d4 b7 25.b4 c8 26.a5 c5 27.bxc5 xc5 28.b3 cb5 29.c5 xa5 30.xb7 xb7 31.ed1 c7 32.f3 e4 33.xe4 xc3 34.b1 xc1 35.b8+ f8 36.xc1 h5 1–0
Download PGN

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