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============================== My email: jotes@go2.pl



Chess engine: CT800 1.45

on


CT800 - UCI chess engine, 
About: I am Rasmus Althoff, main author of this project. My professional background is electrical engineering and embedded systems. You can reach me via e-mail at info@ct800.net – in English or German.

Actually, I just wanted to gain some hands-on experience with ARM Cortex-M microcontrollers. The Olimex H405 board looked promising, so I needed a project idea what to do with this powerful hardware:

artwork with a chessboard on a computer chip
Chess computers have fascinated me since the late ’80s. Back then, I was wondering how such a machine might work, and now with my own chess computer, a dream has come true!

Rating JCER=2660   Author: Rasmus Althoff

Changes from V1.44
Added more options for the operator time bonus in tournament and game-in modes.
Added fade-out option for automatic backlight mode.
Added option for display brightness.
Removed wrap-around for numeric parameters in the menu.
Added support for the Gigadevice GD32F405 controller which is 20% faster than the STM32F405.
The image file size is now variable depending on the actual firmware size.
The opening book compiler adjusts the lookup table according to the book size.
The build tools for Windows have changed from 32 bit to 64 bit. See the build instructions for building under 32 bit Windows.
Updated the ARM GCC version from 7.3.1 to 12.3.1 (2.5% faster).
Added machine-tuned piece values and square tables.
Improved futility pruning.
When being in check, the move time is reduced by 33% instead of 50%.
Capturing a castling enabled rook and then recapturing with another rook no longer keeps the castling rights.
UCI versions
Removed tbhits output in search.
No prebuilt executables for Raspberry Pi supplied anymore.
Known issues
There are no known issues in this version.

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