Since no one has replied, you might try and put your (edited) question in the subject line. You might get some response.

FYI, I found Pente in a unix version and just provided a link to the site. The following day someone had ported it to Maemo.

Also, if you are prepared to run GVM (Palm O/S on the tablet) there will potentially be hundreds of games avaialble of which many will be for two players.