Java Checkers Game

Java Checkers Game

There are several games (checker games) open source available in java on the internet such as github.com/DevonMcGrath/Java-Checkers

If you know java just choose an open source checkers game and make small changes to the algorithm.


I need to customize one of these from a checkers game as follows:
1) The game must have a human x computer player
2) The game must allow configuration for extremely easy levels. This is because the person who is going to learn to play has serious cognitive difficulties and would not be able to beat the computer at an easy level.
3) The game must allow me to set the minimum time for the human player to think before playing (example 5 seconds). So the human player can only play 5 seconds after the computer plays. Then the game will show (5...4...3...2...1...0) and only when zero is displayed can the human player play.
5)1) The Game must use the Brazilian rules for checkers. It is very easy to customize these rules.
6) The game must have a graphical interface, easy to use.