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Currently 23,803 tactical chess problems with a degree of difficulty ranging from trivial to ambitious are provided to
be solved against the clock. Your tactical performance will be measured by the
Glicko rating system. The problems are rated too.
You can sign in completely anonymous as guest to get familiar with the chess board interface, browse some problems or just look around.
If interested, you'll just need a valid email address to register and join our community.
Guía de utilización en Español. Thx to GM ICCF Roberto Alvarez
This is a non-commercial service created and supported by chess
enthusiasts from our chess club in Berlin, Germany.
It is still under construction.
Everyone is invited to participate in development.
Please don't use your skills on attacking this server, but on detecting and removing possible exploits.
For help or proposals send a message to the operator.
Enjoy!
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