Chess Tactics Server

Currently we provide 36,868 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 Medalhustak20774 Norway 2401
Silver Medalhmmm6346 Norway 2349
Bronze MedalErlendm49696 Norway 2257
4morpy129874 Spain 2218
5fastkicker11731 France 2199
6byakuugan135979 United States 2128
7Sergiochess68528 Russian Federation 2128
8Lazarillo2522 United States 2119
9stefanp76064 Romania 2103
10cactus83607 United Nations 2076

11 actions this minute
TacticianCountryRatingProblemRatingTime [s]
tatoEADG Argentina 1204p59986 1454
karadajyan Uruguay 1871p49738 18617.8
Korderov United Nations 1535p60510 13501.0
maracuya Canada 1565p08748 1523
karadajyan Uruguay 1869p48314 19667.5
Korderov United Nations 1535p19768 13567.2
maracuya Canada 1564p09551 16367.5
tatoEADG Argentina 1203p13046 137813.7
karadajyan Uruguay 1868p15140 19599.7
Korderov United Nations 1537p20890 1389
Jinxo011 United States 1340p06806 14809.2

Welcome !
Latest 24h newbies
AdityaKrishUnited Nations
Lee123aUnited Nations
lakekayakUnited Nations
sobakmCzech Republic
LewisandClockUnited Nations
BenoniPlayerUnited Nations
goblin23United Nations
frankusUnited Nations
smile14United Nations
limuUnited Nations
tsfgtmrUnited Nations
2015-03-06 04:50 CET (GMT +0100)
Chess Tactics Server has served
100,658,011 problems to
76,596 registered tacticians from 143 countries.