[Computer Shogi(Japanese Chess)] Mechajyo team's position paper for WCSC24 (24th World Computer Shogi Championship)

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Information about [Computer Shogi(Japanese Chess)] Mechajyo team's position paper for...

Published on April 17, 2014

Author: kimrinjp

Source: slideshare.net


Our Japanese Shogi Program "Mechajyo" 's position paper for 24th World Computer Shogi Championship

The 24th World Computer
 Shogi Championship Position Paper by @mechajyo keywords: Shogi, Japanese Chess, #Julialang 第24回世界コンピュータ将棋選手権 メカ女子将棋 アピール文書

Summary • Introduce of Ourselves • Shogi Playing Program: Mechajyo • Why we choose #Julialang? • About Next Generation Mechajyo
 (NextGen Mechajyo) 2

Let us introduce ourselves! • Mecha Lady Shogi Team(メカ女子将棋部) • 2 Lady Shogi Professionals! • Takebe-san(3-dan), Watanabe-san(1-dan) • 2 Super Ladies! • including PR, craftworker(!) • 1 old geek :(
 (He thinks he is 12 years old cute girl LoL) 3

Mascot girl 
 Mechajyo-chan ! ! ! ! • Available at Japan shogi Association, Rakuten Store! 4

The Shogi Playing Program: @mechajyo • The first Julia Language (hash tag: #Julialang) based Shogi Playing Program! • Actual her name is Mecha Lady Shogi(メカ女子将棋) 
 (Jyoshi(女子) = girls, ladies in Japanese, Shogi(将棋) = Japanese Chess) • Unfortunately, she can not beat us……orz
 (may be her level is on13 Kyu(13級)) • Fancy shogi playing style! :) • Using various Computer Chess based techniques: 
 bit board, null move pruning, etc. • Also using the Bonanza Shogi Program s feature values
 (aka. fv.bin: 186.3MB data blob!) 5

Why we choose #Julialang? • We choose Modern Compilers techniques! • Script Language like coding style • Type Inference • JIT(Just In Time Compilation): fast native code execution based on LLVM infrastructure 6

The benchmark of #Julialang ! ! ! • C Language(gcc) = 1.0, smaller is better! • For more information, check 
 http://julialang.org/ 7

The voices from 
 #Julialang developers :) 8

For WCSC24: • Now we are rapidly developing Next Generation @mechajyo……but it s hard to serve WCSC24 (may be hard:( ) • We prepare same program attended to WCSC23 as a option 11

1st Generation @mechajyo • Using bit board techniques excepts sliding pieces
 (calculation of sliding pieces attacks are done by mailbox algorithms) • Using Bonanza s fv.bin
 (but our implementations of retrieving FVs have serious bugs:( ) • Modern alpha-beta search approach
 (Also have some critical bugs in search routines (T_T)) 12

Next Generation @mechajyo
 (Codename: NextGen Mechajyo) A. About to port Stockfish
 (C++ based Chess Program) to #Julialang
 Mechajyo Chess B. Will be hack Mechajyo Chess into Mechajyo Shogi (in #Julialang) C. But progress of the project is about 20% in today(=March 27th, 2014)

NextGen @mechajyo
 will have: • magic bit board techniques ( incl. sliding pieces) • accurate fv.bin based evaluation functions • fast NPS(Nodes/Second) search routines 14

Source code • Available at GitHub! • #Julialang version of WCSC23 program is under the MIT License.
 https://github.com/kimrin/WCSC23 • NextGen Mechajyo is available at GitHub under the GPLv3 License.
 (respect to Stockfish s License)
 (under the development: can not play Shogi yet.)

Thank you for your attention! Questions?
 feel free to ask me! 
 twitter: @kimrin 16

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