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 MedalErlendm67913 Norway 2235
Silver MedalSergiochess71851 Russian Federation 2169
Bronze Medalbyakuugan146473 United States 2128
4Faramir (IM)78357 Argentina 2100
5morpy135914 Spain 2091
6Improchess78849 Spain 2075
7Aaron24796 United States 2044
8LuisPSupi3904 Brazil 2035
9aryantari21356 Norway 2034
10Karpachov1406 United Nations 2030

13 actions this minute
TacticianCountryRatingProblemRatingTime [s]
raulin2114 Peru 1570p34332 150810.5
Scinterplex Australia 1488p28215 135810.1
Marietje Netherlands 1319p10291 1478
KingKobra813 United States 1225p24755 1148
raulin2114 Peru 1569p10803 15645.2
gloomy86den United States 1916p39265 17653.8
Scinterplex Australia 1484p41347 14241.4
Marietje Netherlands 1320p26035 1403
gloomy86den United States 1915p45648 16673.1
Scinterplex Australia 1480p30786 13542.0
Marietje Netherlands 1319p16625 12084.0
gloomy86den United States 1914p31689 16451.5
Scinterplex Australia 1474p30975 15011.3

Welcome !
Latest 24h newbies
Kleber963United Nations
ItziarUnited Nations
JaviGMUnited Nations
constantinosUnited Nations
RedSTRUnited Nations
kkrishnaUnited Nations
kvishnuUnited Nations
Eduardo1979United Nations
RENZUnited Nations
zer0sumUnited Nations
SaulvimovichUnited Nations
2016-08-25 23:50 CEST (GMT +0200)
Chess Tactics Server has served
107,572,528 problems to
82,920 registered tacticians from 143 countries.