Franky UCI Chess Engine

Java based chess engine using the UCI protocol to communicate with chess UIs like Arena, xBoard, WinBoard, Fritz, etc.

Franky 1.0

(c) Frank Kopp 2019

Released as JAR or EXE (https://github.com/frankkopp/FrankyUCIChessEngine/blob/master/Releases/Franky-1.0.exe) (http://www.jar2exe.com/)

Credits:

• https://www.chessprogramming.org
• TalkChess.org
• Flux, Pulse / Phokham Nonava
• Stockfish / Tord Romstad, Marco Costalba, Joona Kiiski and Gary Linscott
• Crafty / Robert Hyatt
• Beowulf / Colin Frayn
• Mediocre / Jonatan Pettersson
• Bruce Moreland & GERBIL (http://www.brucemo.com/compchess/programming/index.htm)
• CPW-Engine / Pawel Koziol, Edmund Moshammer
• DarkThought / Ernst A. Heinz
• Arena Chess GUI / Martin Blume (Germany) et al
• and many more

Features:

• UCI
• 0x88 Board
  • Zobrist hashing
  • Some bitboards e.g. diagonals
• Hashtable
• Pondering
• Opening Book
• Quiescence
• AlphaBeta
• Killer Moves
• Principal Variation Search
• Aspiration Window Search (in Root)
• Mate Distance Pruning
• Minor Promotion Pruning
• Reverse Futility Pruning
• Null Move Pruning with Verification
• Razor
• Internal Iterative Deepening
• Search Extensions
• Futility Prunings
  • Limited Razoring
  • Extended Futility Pruning
  • Futility Pruning (also in Quiescence Search)
• Late Move Reduction
• Evaluation
  • Static
  • Material
  • Mobility
  • Piece Position
  • King Safety (Simple)
  • Game Phase based evaluation of mid- and end game value (Tapered)

ToDo:

• SEE
• Attacks
• SMP (multi threading)
• More and better evaluations (e.g. development, pawn structure, control, end game)
• More bitboards operations - where it is an improvement to 0x88

Strength:

• WAC Suite 5sec
• Successful: 276 (92 Prozent)
• Failed: 24 (8 Prozent)

EOL:

• est. 1880

Test results:

• 01: 00 Franky-0.12 491.0/880 ·······
• 02: Flux-1.0 37.0/40 36-2-2
• 03: Mediocre_v0.5 34.5/40 32-3-5
• 04: Beowulf 33.0/40 29-3-8
• 05: Abbess2018 28.5/40 28-11-1
• 06: Bismark_1.4 28.0/40 27-11-2
• 07: Adam3.3 27.0/40 25-11-4
• 08: Clarabit_100_x64_win 26.5/40 23-10-7
• 09: La Dame Blanche 2.0c 26.0/40 24-12-4
• 10: GERBIL 24.5/40 23-14-3
• 10: RamJet_014 24.5/40 22-13-5
• 12: Roce39 19.5/40 17-18-5
• 13: Predateur2.2.1_x64 17.0/40 15-21-4
• 14: Clueless 16.5/40 16-23-1
• 15: Ranita_24 14.5/40 14-25-1
• 16: Belzebub_067 14.0/40 12-24-4
• 17: Fmax 11.5/40 8-25-7
• 17: SEE 8.0/40 7-31-2
• 18: Piranha 5.5/40 5-34-1
• 19: Nanook v0.17 3.5/40 1-34-5
• 20: UsurpatorIIemu 1.0/40 1-39-0
• 21: VirutorChessUci_1.1.2 0.0/40 0-40-0
• 21: Ram 0.0/40 0-40-0-