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 MedalErlendm68418 Norway 2205
Silver MedalSergiochess73653 Russian Federation 2140
Bronze Medalbyakuugan146552 United States 2133
4LuisPSupi4391 Brazil 2115
5Improchess81414 Spain 2086
6blueeyed7078 Israel 2078
7cactus84212 United Nations 2035
8tzzzzz2756 Armenia 2031
9VerySlow24676 Russian Federation 2018
10Aaron24836 United States 2007

5 actions this minute
TacticianCountryRatingProblemRatingTime [s]
sanjanavanitha United States 1384p32063 130813.8
Vespasian United States 1369p63527 1558
Vespasian United States 1368p38728 15373.8
sanjanavanitha United States 1386p61034 1534
sanjanavanitha United States 1383p10025 14904.5

Welcome !
Latest 24h newbies
JoseLuisUnited Nations
asdfghUnited Nations
matlab2016United Nations
GabrielSaboiaUnited Nations
barguy22United Nations
kaberdudeUnited States
2016-10-23 16:10 CEST (GMT +0200)
Chess Tactics Server has served
108,111,349 problems to
83,625 registered tacticians from 143 countries.