I challenge any of you to win the new game I created for Android and iOS.
It is a variant of the Tic Tac Toe! Try the 8x8.
Choose "Novo Jogo", then "Super" and "Vs Computador", then "8x8" and "Super Difícil".
The weblinks are:
Android
https://play.google.com/store/apps/details?id=com.ghcsapps.superjogodavelha
iOS
https://itunes.apple.com/app/id1132840671