This is the chess game module (and types) that is currently backing both:
builder.chesstrained.com
and
beta.chesstrained.com/#/simulation
To install just run:
elm install 7hoenix/elm-chess
Checkout builder for how it is being used.
The other half (Trained) isn't open source, yet :sad-panda:
NOTE: These are just sample images. You will need to post your own.
elm package publish