Chess Engines Diary

  We present to you six new versions of chess engines for Android: Alexander 6.1, Bit-Genie 9.24 JA, BrainLearn 31, Clover 9.1, Clovis III dev.5d50 JA, Petrel 2.1 JA . Tests of these engines are coming soon. Chess engine for Android - Alexander 6.1 Rating CEDR=???? Alexander 6.1 for Android download 👉 see post Alexander 6.1 for Windows Chess engine for Android - Bit-Genie 9.24 JA Rating CEDR=???? Bit-Genie 9.24 JA for Android download 👉 see post Bit-Genie 9.24 JA for Windows   Chess engine for Android - BrainLearn 31 Rating CEDR=???? BrainLearn 31 for Android download 👉 see post BrainLearn 31 for Windows   Chess engine for Android - Clover 9.1 Rating CEDR=???? Clover 9.1 for Android download 👉 see post Clover 9.1 for Windows Chess engine for Android - Clovis III dev.5d50 JA Rating CEDR=???? Clovis III dev.5d50 JA for Android download 👉 see post Clovis III dev.5d50 JA for Windows   Chess engine for Android - Petrel 2.1...

Clovis - UCI chess engine. Rating Chess Engines Diary CEDR=2885 Named after the first king of the Franks and the paleoamerican mammoth slayers, Clovis is a powerful UCI chess engine written in C++. It is a successor to [Hopper Chess](https://github.com/jonathanmcdermid/Hopper-Chess-Engine) in that it follows standard convention more closely.  v.III: Clovis is born again! implemented gradient descent tuner disabled drawishness and some other evaluation functions until they are integrated into tuner added some params to evaluation (candidate passer, rook on seventh) vertically mirrored some PSQTs Expecting a ~50 Elo improvement from Clovis II! Clovis III vs other engines: Critter 1.6a 3/21 -15 21 Games Pawn 1.0 0/15 -15 15 Games Carp 2.0.0 3.5/13 -6 13 Games Flounder 0.4.0.0 2.5/13 -8 13 Games Captain 4.0 11/11 +11 11 Games Jangine 2023-03-31 10.5/11 +10 11 Games Wasp 6.50 0.5/11 -10 11 Games Knightx 3.7b 8.5/10 +7 10 Games The Baron 3.45 1.5/10 -7 10 Games MrBob 1.2.0 0/9 -9 9 Game...

Clovis - UCI chess engine. Rating CEDR=2854 Named after the first king of the Franks and the paleoamerican mammoth slayers, Clovis is a powerful UCI chess engine written in C++. It is a successor to [Hopper Chess](https://github.com/jonathanmcdermid/Hopper-Chess-Engine) in that it follows standard convention more closely.  v.III: Clovis is born again! implemented gradient descent tuner disabled drawishness and some other evaluation functions until they are integrated into tuner added some params to evaluation (candidate passer, rook on seventh) vertically mirrored some PSQTs Expecting a ~50 Elo improvement from Clovis II! Individual statistics: Clovis I - 117 games (+ 41,= 17,- 59), 42.3 % Critter 1.6a                  :   4 (+  0,=  0,-  4),  0.0 % Delocto 0.61n                 :   1 (+  1,=  0,-  0), 100.0 % Fritz 17     ...

Clovis - UCI chess engine. Named after the first king of the Franks and the paleoamerican mammoth slayers, Clovis is a powerful UCI chess engine written in C++. It is a successor to [Hopper Chess](https://github.com/jonathanmcdermid/Hopper-Chess-Engine) in that it follows standard convention more closely.  v.II: Clovis II joins the fray! implemented move count pruning use different thresholds for SEE based on whether or not quiets are skipped virtual king mobility heuristic queen promotions generated in capture stage precalculate more masks and tables more use of constexpr Expecting a 50-70 Elo improvement from Clovis I Clovis II download github:https://github.com/jonathanmcdermid/Clovis/releases/tag/II

Clovis - UCI chess engine. Named after the first king of the Franks and the paleoamerican mammoth slayers, Clovis is a powerful UCI chess engine written in C++. It is a successor to [Hopper Chess](https://github.com/jonathanmcdermid/Hopper-Chess-Engine) in that it follows standard convention more closely.  v.I: The changes since v2.0 are not really worthy of a new release, but I've decided to make one anyway as I realized it would be on-brand to start using roman numerals for the versioning of Clovis. Eval is no longer called when the king is in check, and enemy rooks are not considered transparent for bishop mobility and king safety. Clovis I download github:https://github.com/jonathanmcdermid/Clovis/releases