What is the Classic Game Collection game, how does it work?

According to the introduction of ARDGET, Classic Game Collection is a Board game on the Android platform. There is currently a 2.0.6.9062 version released on Jul 19, 2019, you can see the details below.

Classic Game Collection is a compact set of three traditional games: [1] computer chess, [2] computer reversi and [3] number place (a.k.a. sudoku) puzzle.

Features

Chess and Reversi:
• Engaging game plays versus smart computer player (level 1 to 5, selectable) on responsive graphical 2D user interface.
• Automated game recording in algebraic notation (sharable as text) and play-results statistics comparable with world averages.

Number Place:
• Instant generation of semi-challenging puzzles with ~25 initial clues playable with handy in-place number input system.
• Timer, duplication check, undo/redo and hint functions available.

Minor updates