This is an engine for the Japanese chess variant Dōbutsu shōgi (動物将棋). It uses a comprehensive endgame table base to achieve perfect play from any position.
On a UNIX-like operating system, you should be able to compile the software by typing
into your terminal. You might need to adjust the CC variable in case
your system doesn't have a
c99 binary. On most Linux systems,
make CC="gcc -std=c11" should work. Then type
to generate the compressed endgame tablebase. This may take a while but you only need to do it once. Finally, type
make PREFIX=... install
to install the software into the provided
PREFIX, defaulting to
/usr/local if not provided.
Once installed, you can start the program by typing
dobutsu into your
terminal. You can play moves by typing them. The following commands
are supported, most of which are similar to those in GNU Chess:
help Print a list of commands hint Print what the engine would play exit Quit the program version Print program version new Start a new game undo Undo previous move remove Undo last two moves setup Setup board with specified position string show board Print the current board show moves Print all possible moves show eval Print position evaluation show lines Print all possible moves and their evaluations strength Show/set engine strength both Make engine play both players go Make the engine play the colour that is on the move force Set the engine to play neither colour verbose Print the board after every move quiet Do not print the board after every move
For more details, see dobutsu(6).
Dōbutsu shōgi is played on a board with four ranks 1–4 and three files A–C. The farthest rank for each player is called the promotion zone. The player whose pieces start out on ranks 1 and 2 is called Sente and makes the first move. The other player is called Gote.
ABC +---+ 1|gle| 2| c | 3| C | 4|ELG| * +---+
Each player starts out with four pieces, one lion, one elephant, one
giraffe, and one chick. The goal of the game is to either capture
the opponents lion or to advance one's own lion into the promotion zone
without moving into check. In the software, pieces owned by Sente are
represented by uppercase
R; pieces owned by
Gote are represented by lowercase
* denotes whose move it is.
The pieces move like this:
- The lion can move one square into every direction (like the king in international chess)
- the elephant can move one square diagonally
- the giraffe can move one square horizontally or vertically
- the chick can move one square forwards (towards the promotion zone)
- a rooster can move like a giraffe or one square diagonally forward
All pieces capture the same way they move. A chick is promoted to a rooster once it enters the promotion zone. Instead of moving a piece, a captured piece can be dropped into any vacant square. A captured rooster loses its promotion when dropped.
Copyright © 2016–2017 Robert Clausecker. All rights reserved.
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