Caro - Gomoku - Five in a row game with smart AI

This app currently supports 2 common rules:
+ GOMOKU (Freestyle): The winner is the first player to get an unbroken row of five or more stones horizontally, vertically, or diagonally.
+ CARO (Blocked rule - also called Gomoku+, popular among Vietnamese): The winner must have an overline or an unbroken row of five stones that must not be blocked at both ends: XOOOOOX and OXXXXXO will not count as a winning line.

This app is integrated with extremely intelligent AI, you can choose to play with 7 levels from easy to extremely difficult or choose to play with friends

Features:
+ Zoom In, Zoom Out
+ Support Modes: Two players, play with strong AI
+ Show last move, show threat lines.
+ Unlimited undo

Fix bugs, Increase the strong of AI.