chess trial software / shareware for linux

All users of Linux now have a new great game - Challenge Checkers! The game is a wonderful training for you logic force and strategy skills.
You play with your device or with your partner, getting more and more experience on several skill levels. Enjoy also great graphics and sound - endless pleasure for devoted chess player of any age. A real challenge for all checkers masters!
Main features:
- two players mode
- game autosave on exit
- demo mode with advanced AI engine
- various sound and animation effects
Game Rules
The game is played on a board with dark and light squares, arranged in an 8x8 grid. Each player sets his 12 pieces on his side of the board in three ranks on dark checks. Checkers is played on the dark squares only. The players move one piece at one turn. The pieces may be moved diagonally.
A piece can only be moved forward. If one of your pieces is next to the opponents
piece and the square beyond it is free, you are required to jump over the opponents
piece. The opponents piece is then removed from the board. It is possible to jump many times in a row with the same piece, capturing several of your opponents pieces.
The squares placed in the last row on the opposite side of the board are King squares. "If a piece reaches the far end of the board, then it becomes a king. " The king is allowed to move and jump diagonally backwards and forwards. Kings can be captured like any other pieces.
The game lasts until all of the opponents pieces are captured, or are blocked so that they cannot make a move. The player who loses all the checkers or has them blocked loses the game.
The game runs on major Linus flavors (RedHat, Debian, Mandrake, SuSE, Slackware and others)