Chess Tactics Server

Currently we provide 36,869 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 MedalErlendm35541 Norway 2230
Silver Medalfastkicker11456 France 2208
Bronze Medalbyakuugan132655 United States 2132
4Soryu74682 Japan 2114
5Faramir (IM)74339 Argentina 2103
6morpy110533 Spain 2101
7cactus81729 United Nations 2060
8Lazarillo424 United States 2050
9aryantari6917 Norway 2041
10blueeyed3134 United Nations 2034

11 actions this minute
TacticianCountryRatingProblemRatingTime [s]
Helene1 United Nations 1443p07986 1534
efgh Iran 1713p17293 1659
paleolithic Philippines 1256p16344 15229.4
caliban Switzerland 1677p54790 1791
efgh Iran 1713p51555 165313.8
xenonse Germany 1333p58736 1462
caliban Switzerland 1678p01675 1772
efgh Iran 1713p55237 181610.8
caliban Switzerland 1676p25191 18043.9
Helene1 United Nations 1453p27134 1582
efgh Iran 1713p39252 17095.2

Welcome !
Latest 24h newbies
NikoTeslaUnited Nations
chris17United Nations
creg67United States
dskunklerUnited Nations
jmineshUnited Nations
MalcolmnXUnited Nations
juanmoralesUnited Nations
telalUnited Nations
caberleUnited States
jb97United Nations
HALALOOLIAUnited Nations
Red1979United Nations
KaliGibsUnited Nations
paidammoyoUnited Nations
sumakUnited Nations
ChessEthosUnited Nations
henrymyUnited Nations
2014-11-24 10:00 CET (GMT +0100)
Chess Tactics Server has served
98,860,099 problems to
75,052 registered tacticians from 143 countries.