Chess Tactics Server

Currently we provide 36,863 tactical chess problems ranging in difficulty from trivial to ambitious. Your tactical performance will be measured by the Glicko rating system wich takes into account both the difficulty of each problem and the time you take to solve it.

You can sign in as guest completely anonymous to get familiar with the chess board interface, browse some problems or just look around. You just need a valid email address to register and join our community.

 Guía de utilización en Español by 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 its development. Please don't use your skills to attack this server, but to detect and remove possible exploits.


Top 10 active tacticians
Gold Medalhmmm9922 Norway 2301
Silver MedalErlendm74255 Norway 2278
Bronze MedalSergiochess77948 Russian Federation 2165
4Faramir (IM)79648 Argentina 2132
5byakuugan148804 United States 2113
6dennis929 United Nations 2090
7LuisPSupi6332 Brazil 2085
8linkest77 Philippines 2071
9Improchess88434 Spain 2065
10blueeyed9448 Israel 2053

16 actions this minute
TacticianCountryRatingProblemRatingTime [s]
felino Spain 1398p37147 14676.0
ACReed Ireland 1315p55405 118329.2
ShereKhan Czech Republic 1591p34496 156715.4
Erlendm Norway 2277p24195 19152.5
koala United Nations 1694p10932 1610
Erlendm Norway 2277p62559 19712.4
felino Spain 1398p54148 150113.3
Erlendm Norway 2277p15087 16891.5
ShereKhan Czech Republic 1592p36462 156012.6
alexf United Nations 1562p10259 1730
Erlendm Norway 2276p00215 18410.9
ACReed Ireland 1315p39836 11737.2
felino Spain 1399p29249 140431.0
ShereKhan Czech Republic 1590p32285 16133.8
Erlendm Norway 2276p30849 18350.6
koala United Nations 1694p44287 15434.9

Welcome !
Latest 24h newbies
JarnoLUnited Nations
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2017-09-19 22:45 CEST (GMT +0200)
Chess Tactics Server has served
110,717,358 problems to
87,529 registered tacticians from 143 countries.