You can play Vinken and Heggies on www.mindgames.com every day.
Vinken can be found under the name 'Check-It'. Heggies is still called Heggies.
Gamedistion is a broker for games. Via Gamedistribution you can play "Check It" on dozens of websites around the world under the name: "Check3" and "Check2Square".
"Check2Square" is a new type of "Check It" from RidM. It works the same as the 'normal' "Check It", but in this variant, the checkmarks must not be diagonally, horizontal and vertical opposite each other.
As a third puzzle you can now also play Heggies on Gamedistribution. This is called "Hedges".