Chess engine: Polyfish 20240114

 

Polyfish is a UCI chess engine based on Stockfish. Rating CEDR=3746

Overview

**Polyfish** is a UCI chess engine based on [Stockfish](https://github.com/official-stockfish). It is identical to Stockfish with the added capability of handling [Polyglot](https://web.archive.org/web/20191216195456/http://hardy.uhasselt.be/Toga/book_format.html) and [CTG](https://www.chessprogramming.org/CTG) book.

**Polyfish** supports two books at the same time, one could configure two CTG books, two BIN books, or one CTG and one BIN in either order. The second book is only probed if the first book has no moves for the given position. The engine starts searching only if no move is found in either the first book or the second book.

Read [Note about CTG books](https://github.com/khalid-a-omar/Polyfish#note-about-ctg-books)

Read [Questions and Answers about Polyfish book support](https://github.com/khalid-a-omar/Polyfish#questions-and-answers)

Rating CEDR progres: Polyfish

Pl	Engine	Rating	Score	Games	%
29	Polyfish 20230426	3753.0	27.00	44	61.36
32	Polyfish 230509	3752.0	37.50	52	72.12
47	Polyfish 221009	3746.0	315.00	520	60.58
51	Polyfish 230604	3743.9	59.00	112	52.68
64	Polyfish 231001	3742.5	204.00	331	61.63
109	Polyfish 230115	3737.5	304.00	432	70.37
117	Polyfish 231104	3737.0	43.00	84	51.19
128	Polyfish 230426	3735.9	236.50	335	70.60
137	Polyfish 20230421	3735.5	58.00	92	63.04
152	Polyfish 20230304	3734.6	284.50	463	61.45
167	Polyfish 20230326	3733.6	132.50	218	60.78
179	Polyfish 230621	3733.1	109.00	175	62.29
186	Polyfish 231008	3732.7	212.50	366	58.06
199	Polyfish 231107	3732.3	409.50	692	59.18
206	Polyfish 231022	3732.0	242.50	394	61.55
217	Polyfish 230807	3731.5	335.50	510	65.78
229	Polyfish 230708	3731.0	133.00	235	56.60
257	Polyfish 230202	3730.1	223.50	356	62.78
281	Polyfish 220826	3729.1	67.50	100	67.50
295	Polyfish 230607	3728.5	92.50	146	63.36
298	Polyfish 230510	3728.5	181.50	310	58.55
309	Polyfish 231013	3728.3	206.50	341	60.56

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