http://itunes.apple.com/us/app/id398398860?mt=8
With Chesstrainer on iphone, develop your tactic skills !
Solve chess problems, track your progress, and compare your level to the other problem solvers.
The application is free.
website:
www.mychesstraining.com
queen sacrifice very powerful!
THACREAMOFSUMYUNGGUY 4 months ago
genius !
mrkello2000 1 year ago
Great!
paputeo 1 year ago