danjovic / chessmate

Creation of repository

ChessMate

The ChessMate is an AVR ATmega328P running at 25 MHz with chess Engine based on recursive negamax search micro-Max 4.8 by H.G. Muller The hash table was removed by Andre Adrian.

Our contribution are the following features:

• Included Threefold repetition rule using Compact Chess Representation of history boards (C.C.R.), we made it valid for the last 15 boards with 32 bytes per board; so the history boards occupies 480 bytes of RAM.
• Included the Fifty-move rule check from fairy-Max.

Processing Speed: For instance, the 32-bit test version of Rybka on AMD 64-bit CPU running on 2.4Ghz achieves 104 Knps (thousands of nodes per second); refer to C.C.R..

The ATmega328P ChessMate at 25 MHz approach, can reach ~1.3 Knps (1298.1 nodes/s).

A node refers to a branch of play the computer investigated.

First release at 15-Feb-2016

How to play: Initially, it should appear "PLAY" at the display

• Press and hold "NEW" + the number of level
• Enter your 4 digit move then press "ENTER"
• Wait for lily thinking (it will be displayed blinking dots)
• The lily move will be displayed just after the thinking
• If you entered an erroneous digit; press "CLR", short press, to delete one digit
• If you want to delete all digits entered, press and hold "CLR"

See the Demo Video and the Hackaday Entry