Since you’re here...

... we have a small favour to ask. More people, like you, are reading and supporting our blog: "Chess Engines Diary". And unlike many other sites and blogs, we made the choice to keep our articles open for all, regardless of where they live or what they can afford to pay.

We hope you will consider supporting us today. We need your support to continue to exist, because good entries are more and more work time. Every reader contribution, however big or small, is so valuable. Support "Chess Engines Diary" even a small amount– and it only takes a minute. Thank you.
============================== My email: jotes@go2.pl



Chess engine: Igel 2.3.1 (Windows, Linux, Mac and RaspberryPi)

-

Igel - UCI chess engine, Rating JCER=2873
Author : Volodymyr Shcherbyna (Fork of GreKo 2018.01)

 Igel 2.3.1 news
-------------

- Re-write the root search routine
- Re-write aspiration loop with a smaller aspiration window
- Do not cutoff qsearch on pv moves in qsearch
- Handle repetitions at the qsearch entance
- More strict pruning conditions for quiet moves
- Proper way to pass position to child threads in SMP mode to handle repetitions
- Unified condition to killer moves as non-tactical moves
- Perft tests for six different positions

Igel 2.3.1 - download
All files (games, tables and engines) - download from page

Comments

Post a Comment

Popular posts from this blog

New chess engine: HypnoS 190324 (derived from Stockfish)

-
Image
  HypnoS is a free and strong UCI chess engine derived from Stockfish  that analyzes chess positions and computes the optimal moves. HypnoS does not include a graphical user interface (GUI) that is required  to display a chessboard and to make it easy to input moves. These GUIs are  developed independently from HypnoS and are available online. HypnoS development is currently supported on the Openbench framework. OpenBench (created by Andrew Grant) is an open-source Sequential Probability Ratio Testing (SPRT) framework designed for self-play testing of engines. OpenBench makes use of distributed computing, allowing anyone to contribute CPU time to further the development of some of the world's most powerful engines. HypnoS 190324 download
Read more

New chess engine: HypnoS 240324 (derived from Stockfish)

-
Image
  HypnoS is a free and strong UCI chess engine derived from Stockfish  that analyzes chess positions and computes the optimal moves. HypnoS does not include a graphical user interface (GUI) that is required  to display a chessboard and to make it easy to input moves. These GUIs are  developed independently from HypnoS and are available online. HypnoS development is currently supported on the Openbench framework. OpenBench (created by Andrew Grant) is an open-source Sequential Probability Ratio Testing (SPRT) framework designed for self-play testing of engines. OpenBench makes use of distributed computing, allowing anyone to contribute CPU time to further the development of some of the world's most powerful engines. HypnoS 240324 download
Read more

Chess engine: SF 16.1 MPV

-
Image
Author, Eduard Nemeth: This engine is better suited for analysis than the current newer developer versions. The following version is maybe even better. I implemented the network with Dimension 3072 as well as the Random Op. MultiPV mode. Other features include Minimum Thinking Time and Slow Mover. As default is Random Op. MultiPV = 3. I consider this setting to be the best for tactical analysis. With Random Op. MultiPV = 1 the engine behaves like Stockfish 16.1 with network dimension 3072. The original SF 16.1 uses a NNUE with dimension 2560. Download SF 16.1 MPV
Read more

Chess engine: Incognito 8.2 (experimental version of CorChess)

-
Image
  Eduard Nemeth: "by Solista: This engine is identical in code to 8.01 but without Random Op. MultiPV mode. Some users only want to use normal MultiPV mode. Download Win 64-Bit (avx2, bmi2, sse41, source code).". Rating CEDR=3741 Incognito 5 PRO engine results SF CorChess 010124 25.5/50 +1 50 Games Predator AI 23/46 +0 46 Games Polyfish 240105 22.5/44 +1 44 Games Sawfish 2TC 21/42 +0 42 Games SF PB 070124 14.5/29 +0 29 Games Dragon 3.3 15.5/26 +5 26 Games Stockfish 20240108 12/24 +0 24 Games Deep Blue 20230628 12/24 +0 24 Games AbbyStein 2.8 12/24 +0 24 Games Berserk 12.1 11/20 +2 20 Games Cool Iris 11.80 10.5/20 +1 20 Games Ethereal 14.25 10.5/16 +5 16 Games Stockfish 20231231 8/16 +0 16 Games Raid 3.1 8/16 +0 16 Games SF-PRO 25.12.2023 8/16 +0 16 Games Killfish 071223 8/16 +0 16 Games Crystal 7 7/14 +0 14 Games TACTICAL 161223 6/12 +0 12 Games Fisherov chess monk 1.2 6/12 +0 12 Games Seer 2.8.0 6.5/10 +3 10 Games SF-PRO 07.01.2024 5/10 +0 10 Games Incognito 8.2 download
Read more

New Chess Engines Diary Rating (CEDR) - 06.04.2024, over 317 thousand games!

-
Image
  In March there were as many as 16,713 new games . In total there are 317.321 games! The new CEDR ranking was calculated based on these games. All 317.321 games download New Chess Engines Diary Rating CEDR – 06.04.2024 Chess Engines Diary Rating CEDR – 06.04.2024 generated with Ordo 0.9.9 (anchor Critter 1.6a with 3230) All 317.321 games, Time:3’+3” Minimum 250 games Pl Engine Rating Score Games (%) 1 Stockfish 20231104 3760.8 221.00 301 73.42 2 CorChess 20240122 3750.7 149.00 278 53.60 3 ShashChess 34 3747.5 156.50 260 60.19 Stockfish 16.1 3745.6 660.00 1111 59.41 4 Lc0 BT4 3712.6 148.50 263 56.46 5 Dragon 3.3 3711.5 1537.00 2939 52.30 6 Berserk 20240311 3692.4 224.00 374 59.89 7 Caissa
Read more

Chess engine: Cool Iris 12.10 and Cool Iris 12.10 D3072 (Stockfish derivative)

-
Image
Chess engine: Cool Iris  (Stockfish derivative) Rating CEDR=3742 Author's logo: Cool Iris 1.80 - results: TACTICAL 161223 26/53 -1 53 Games Deep Blue 20230628 19/40 -2 40 Games AbbyStein 2.8 19/40 -2 40 Games Dragon 3.3 20.5/38 +3 38 Games Raid 3.1 17.5/36 -1 36 Games Sawfish 2TC 18/34 +2 34 Games YuliGM PrO 15 16/32 +0 32 Games Killfish 071223 14.5/30 -1 30 Games Hazard 4.1 14.5/30 -1 30 Games SF CorChess 010124 14.5/30 -1 30 Games Crystal 7 CMB 13.5/26 +1 26 Games CorChess 20231219 12/25 -1 25 Games Leptir 230124 12.5/24 +1 24 Games Hazard 4.21 DuaL 12/24 +0 24 Games Crystal 7 11.5/22 +1 22 Games Predator AI 10.5/20 +1 20 Games Eman 9.90 10/20 +0 20 Games Incognito 5 PRO 9.5/20 -1 20 Games Obsidian 9.0 11.5/19 +4 19 Games Patzer AI X-256 9/18 +0 18 Games Brainlearn 26.4 9/18 +0 18 Games Cool Iris 1.80 - tournament results: 2023.12.19.NewEnginesTournament 38/48 +28 2023.12.19.NewEnginesTest 37.5/50 +25 2023.12.21.NewEnginesTest 32/46 +18 2023.12.22.ChessEnginesDiaryTest 36/42 +
Read more

New version chess engine: ShashChess 35.1

-
Image
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
Read more