Plainim is played on a checkered board by removing or adding chips. There are just a few rules.
On a single move, one may only add/remove chips in a single row.
At most one chip is allowed per square.
One may only add chips to the right of a chip being removed on the same move.
The one to remove the last chip wins.
To perform a move click on squares (in a single row) where you want chips placed or removed (see that you confirm to Rules 1-3).
Then press the button "Make Move".