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 Medalhustak22080 Norway 2525
Silver Medalhmmm8760 Norway 2370
Bronze MedalAkira3086 Norway 2350
4Erlendm62640 Norway 2332
5byakuugan141040 United States 2114
6morpy135248 Spain 2109
7pannkaka5337 Sweden 2105
8LuisPSupi386 Brazil 2090
9stefanp83963 Romania 2083
10Faramir (IM)75449 Argentina 2077

18 actions this minute
TacticianCountryRatingProblemRatingTime [s]
LLLLL Hong Kong 1889p45782 16822.0
WinningBlunder Canada 1668p46947 15461.2
pensador Peru 1876p38651 16857.0
LLLLL Hong Kong 1887p39363 19602.8
KSF1853 Germany 1708p11488 10711.1
PaMe2005 Italy 1318p47818 1366
WinningBlunder Canada 1670p01832 1806
pensador Peru 1879p10484 1818
LLLLL Hong Kong 1886p07671 16522.9
SolGarlic Portugal 1303p64596 1461
KSF1853 Germany 1707p09122 12211.4
WinningBlunder Canada 1670p35822 15997.5
pensador Peru 1878p24183 16450.7
LLLLL Hong Kong 1884p01829 18670.8
KSF1853 Germany 1707p22981 10700.9
pensador Peru 1877p59335 16802.0
WinningBlunder Canada 1666p34749 16883.3
LLLLL Hong Kong 1884p43893 192110.7

Welcome !
Latest 24h newbies
hana06Czech Republic
letopUnited Nations
KamakiriCosta Rica
marce22United Nations
kasper924United Nations
abeltran22United Nations
fourhoresemenUnited Nations
KarolqaCzech Republic
billaUnited Nations
2015-10-06 18:15 CEST (GMT +0200)
Chess Tactics Server has served
103,734,869 problems to
79,134 registered tacticians from 143 countries.