Dobutsu-Shogi is a much simpler variant of Shogi (Japanese chess), which is played on 3x4 board. See the Wikipedia article for the detail.
It is known that black (the starting player) cannot win if white plays perfectly. This is a constructive proof; Dobutsu-Shogi master is a perfect player. You can never beat it. Enjoy the helplessness!
$ make -C precomp
$ cd client
$ ruby images/setup.rb
$ npm install
$ npm run build
$ cd ..
$ open docs/index.html
precomp/: precompute the data base of the perfect play.client/: serves a UI for browser.