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 MedalErlendm67436 Norway 2282
Silver MedalSergiochess70598 Russian Federation 2126
Bronze MedalLazarillo3350 United States 2121
4byakuugan146365 United States 2108
5Faramir (IM)78357 Argentina 2100
6Aaron24780 United States 2084
7LuisPSupi3835 Brazil 2042
8kuba33129 Czech Republic 2032
9LTPNJ13152 United States 2015
10Yaranaika80245 Japan 2011

15 actions this minute
TacticianCountryRatingProblemRatingTime [s]
Urgenz Germany 1845p32837 13890.8
DrZoidbergMD United States 1816p54895 16483.7
Marietje Netherlands 1330p58430 13409.1
cbatx Spain 1445p30616 138711.7
Urgenz Germany 1845p18539 14491.1
Marietje Netherlands 1328p56333 13283.4
Urgenz Germany 1844p48643 11681.0
DrZoidbergMD United States 1816p05240 1968
cbatx Spain 1445p36573 13598.7
PeaceProcess Netherlands 1534p19267 162313.0
Urgenz Germany 1844p20441 11621.1
Marietje Netherlands 1329p49687 140717.6
Urgenz Germany 1844p29125 12782.5
cbatx Spain 1444p44472 13111.8
cbatx Spain 1446p59960 1378

Welcome !
Latest 24h newbies
imatharvUnited Nations
ZetsUnited Nations
knowphishUnited Nations
EveliasUnited States
ShadowfearUnited Nations
killzogUnited Nations
epachamoUnited Nations
2016-07-23 23:10 CEST (GMT +0200)
Chess Tactics Server has served
107,242,176 problems to
82,539 registered tacticians from 143 countries.