Hello.
I made a new game that allows you to learn chess theory and at the same time develops concentration and attention, so necessary in chess. The principle of the game is based on the mechanics of match-3, but the levels depend on the particular version of the chess theory. The game is called Sicilian defense. As an experienced chess player, I like it. Perhaps you will like it.
Google Play: https://play.google.com/store/apps/details?id=me.varton.Chess_Match
Previously, for iPhone/iPad:
iTunes Store: https://itunes.apple.com/us/app/chess-match-sicilian-defense/id12… ls=1&mt=8
iTunes Store iPad: https://itunes.apple.com/us/app/chess-match-sicilian-defense/id12… ls=1&mt=8