Polyfish 230426 wins Arena New Engines Tournament (Test by Chess Engines Diary, 2023.04.29

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P	Engine	Rtng	Score	Chg	+/-/=
1:	Polyfish 230426	3726	31.5 / 34	+24	(+29 -0 =5)
2:	SFT 26.04.2023	3700	30.5 / 34	+14	(+27 -0 =7)
3:	SugaR AI ICCF SE	3691	28.5 / 34	-7	(+26 -3 =5)
4:	Caissa 1.8	3496	28.5 / 34	+10	(+25 -2 =7)
5:	Tenax 0.7.9	2400	24.0 / 34	+146	(+21 -7 =6)
6:	Roc 2.0.0	3239	21.5 / 34	-31	(+19 -10 =5)
7:	Rice 5.0.0	2400	21.5 / 34	+119	(+19 -10 =5)
8:	Flounder 0.5.0.0	3175	20.5 / 34	-34	(+17 -10 =7)
9:	Svart 4.0.0	2557	18.0 / 34	+48	(+14 -12 =8)
10:	nIPPOLIT	3099	17.5 / 34	-58	(+16 -15 =3)
11:	Polaris 1.5.0	2430	14.0 / 34	+37	(+12 -18 =4)
12:	Peacekeeper 1.40	2726	11.0 / 34	-75	(+7 -19 =8)
13:	Zangdar 2.15.03	2499	10.0 / 34	-20	(+7 -21 =6)
14:	Mess 0.2.0	2382	9.0 / 34	+0	(+6 -22 =6)
15:	Queen 4.05	2400	7.5 / 34	-20	(+3 -22 =9)
16:	Akimbo 0.2.0	2571	6.0 / 34	-78	(+5 -27 =2)
17:	ChessKISS 1.8d	2357	4.5 / 34	-41	(+2 -27 =5)
18:	Apotheosis 3.0.0	1999	2.0 / 34	-17	(+1 -31 =2)

Polyfish (tournament winner) is a UCI chess engine based on Stockfish. Rating CEDR=3726

It is identical to Stockfish with the added capability of handling Polyglot,

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Chess Engines Diary