Chess engine: Polyfish 20240114

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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

Polyfish 20240114 download

Comments

New Strong Engines Test, by Chess Engines Diary, 2024.04.12

💾 552 (!) games from the tournament download 👍 @chessenginesdiary Country - Poland, City - Malbork 🕓 Time 3'+3" 💻HP Pavilion i5-1035G1 8GB RAM 🖬 GUI-Banksia All CEDR 317.321 games download (01.04.2024 - 3'+3") HypnoS 030424, Yuli GM Pro 16, Stockfish 16.1 and ShashChess 35 . These four engines scored the same number of points and placed at the top of the table in this strong tournament. Tech table: Engine KN/move NPS dep/mov time/mov mov/game time/game fails Alexandria 6.1.0 3218 576429 30.2 5.6 56.7 316.2 Berserk 13 4779 841025 36.7 5.7 56.0 318.1 Brainlearn 28 2275 366977 31.4 6.2 43.5 269.4 Caissa 1.18 5492 923486 30.2 5.9 50.4 299.7 Clover 6.1.19 4803 854377 31.4 5.6 62.2 349.4 Cool Iris 12.10 2201 356730 27.6 6.2 51.2 315.5 CorChess 20240331 2253 372774 27.4 6.0 52.2 315.8 Crystal 8 3582 571994 20.3 6.3 47.7 298.8 Fire 9.3 5225 876565 22.0 6.0 55.5 331.1 Fisherov chess monk 1.2 3487 619728 36.0 5.6 60.4 340.0 Hyp

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New version chess engine: Lc0 v.0.31.0-rc2

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Yuliirma 4.0 wins Strong Engines Tournament (Tests by Jörn Gronemann, Heide, 2024.04.26 Time: 3'+3")

Our next test, a large tournament in which over 1,000 games were played, was won by the Yuliirma 4.0 chess engine. This engine is only available to our testers. In second place is the official version of Stockfish 16.1 and in third place is Stockfish 20240421 . GPU NVIDIA RTX 3060 ti. GUI-Banksia, For Every Engine only 1 CPU and 512 Hashtables, Book - short ICCF book, 6TBs. 🕒🕒Time 3'+3" 1050 (!!!) tournaments games download 💾 All games CEDR 317.321 games download 01.04.2024 (3'+3") @chessenginesdiary

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ShashChess - UCI chess engine. Rating CEDR=3747 (01.04.2024) ShashChess is a free UCI chess engine derived from Stockfish family chess engines. v.35.1: ShashChess 35.1 Nodestime option corrected futility pruning: parent node ShashChess 34.5 - results: Corchess 20231123 50.5/100 +1 100 Games Eman 9.80 19.5/38 +1 38 Games Patzer AI X-256 18.5/38 -1 38 Games Brainlearn 26.4 18/38 -2 38 Games Hazard 4.1 17.5/36 -1 36 Games Raid 3.1 16/32 +0 32 Games Crystal 7 CMB 16/32 +0 32 Games Dragon 3.3 16.5/30 +3 30 Games Polyfish 231120 15.5/30 +1 30 Games Stockfish 16 15/30 +0 30 Games Sawfish 2TC 14/28 +0 28 Games Deep Blue 20230628 14/28 +0 28 Games Incognito 4 12.5/26 -1 26 Games YuliGM PrO 15 12.5/24 +1 24 Games Vanilla 14c 12/24 +0 24 Games Fisherov chess monk 1.2 13/22 +4 22 Games Cool Iris 11.50 11/22 +0 22 Games SF-PRO 19.11.23 8.5/16 +1 16 Games YuliGM Pro 14 6/12 +0 12 Games Killfish 231123 6/12 +0 12 Games Killfish 071223 5.5/12 -1 12 Games ShashChess 35.1 - download

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