Cinnamon

UCI Chess Engine

Cinnamon is a chess program for Windows, Linux, Mac OS, Android and Raspberry Pi, is a console-based chess engine for use with xboard, Arena, Tarrasch, Droidfish or any UCI-compatible GUI. Cinnamon is also a javascript library to play with chessboardjs or any js GUI.

• Play on line

Version

2.5

News

• Time management
• Tapered eval

Useful links

• Bitboard Calculator
• Auriga Distributed Perft
• Web Eval debugger
• Cinnamon on Android
• Cinnamon on DGT Pi
• Clion IDE

Features

• Elo ratings
• Available for both Unix, Windows, Mac, Android, ARM and Javascript
• UCI protocol
• GPL 3 License
• Chess 960
• C++11 source
• PVS
• Rotated bitboards
• Null moves
• Futility pruning
• Reverse Futility Pruning
• Delta pruning
• Razoring
• Interruptible multithread Perft test standard and chess960
• 32/64 bit architectures
• Iterative deeping
• History heuristics
• Killer heuristics
• Lazy evaluation
• MVV/LVA
• Transposition Table
• Aspiration Windows
• Late Move Reduction
• Ponder
• Gaviota Tablebases
• Syzygy Tablebases

Binaries

Binaries are available here. All files are compiled statically, no further libraries are necessary.

Command line tools

Perft

cinnamon.exe -perft [-d depth] [-c nCpu] [-h hash size (mb) [-F dump file]] [-Chess960] [-f "fen position"]

Setting -F and -h you can stop (Ctrl-c) and restart the perft process.

Gaviota DTM (distance to mate)

cinnamon.exe -dtm-gtb -f "fen position" -p path

Gaviota WDL (win/draw/loss)

cinnamon.exe -wdl-gtb -f "fen position" -p path

SYZYFY DTZ (distance to zero)

cinnamon.exe -dtz-syzygy -f "fen position" -p path

SYZYFY WDL (win/draw/loss)

cinnamon.exe -wdl-syzygy -f "fen position" -p path

EPD generator

cinnamon.exe -puzzle_epd -t K?K?

example: cinnamon.exe -puzzle_epd -t KRRKPN

Compiling

Cinnamon requires C++11 or greater

• use MS Visual Studio (cinnamon.vcxproj)

• use cmake (CMakeLists.txt)

• use make - unique Makefile to compile for many architectures:

    $ make

    Makefile for cross-compile Linux/Windows/OSX/ARM/Javascript

    make cinnamon64-modern-INTEL     > 64-bit optimized for modern Intel cpu
    make cinnamon64-BMI2             > 64-bit optimized for Haswell Intel cpu
    make cinnamon64-modern-AMD       > 64-bit optimized for modern Amd cpu
    make cinnamon64-modern           > 64-bit with popcnt bsf sse3 support
    make cinnamon64-generic          > Unspecified 64-bit
    make cinnamon64-ARM              > Optimized for ARM cpu

    make cinnamon32-modern           > 32-bit with sse support
    make cinnamon32-generic          > Unspecified 32-bit
    make cinnamon32-ARM              > Optimized for ARM cpu

    make cinnamon-js                 > Javascript build

    add:
     COMP=compiler                   > Use another compiler
     FULL_TEST=yes                   > Unit test (googletest)

    g++ is the default compiler, add COMP=yourcompiler to use another compiler
     example: make cinnamon64-modern-INTEL COMP=clang++

License

Cinnamon is released under the GPLv3+ license.

Credits

Cinnamon was written by Giuseppe Cannella at gmail dot com.