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 Medalhustak21921 Norway 2548
Silver Medalhmmm8454 Norway 2423
Bronze MedalErlendm60157 Norway 2336
4fastkicker12276 France 2200
5morpy134879 Spain 2164
6Fedex3285 Argentina 2131
7Faramir (IM)75157 Argentina 2120
8Lazarillo2905 United States 2111
9Gliga4762 Brazil 2095
10aryantari14900 Norway 2093

18 actions this minute
TacticianCountryRatingProblemRatingTime [s]
Gliga Brazil 2093p28518 17123.5
yufei091029 China 1610p13410 15575.3
DaniMuka Germany 1480p32750 1494
Oberdan Italy 1387p20619 127424.5
yufei091029 China 1611p01121 162026.2
hound Australia 1451p09528 1576
solonegras Spain 1240p27263 139429.9
Gliga Brazil 2085p61836 20282.7
Zefanya United Nations 1553p10885 17267.2
DaniMuka Germany 1479p38767 157611.3
primo704 Belgium 1613p65106 1718
Gliga Brazil 2082p04564 17251.1
hound Australia 1449p55555 15223.8
Gliga Brazil 2080p48889 16492.0
Oberdan Italy 1389p03142 1530
hound Australia 1447p22195 13861.6
estunad Mexico 1453p56743 165657.4
Zefanya United Nations 1553p38697 1756

Welcome !
Latest 24h newbies
AardvarkUnited Nations
TheCTZNUnited Nations
skeen0United States
JabroniUnited States
lpd2United Nations
blatinoDominican Republic
2015-09-02 10:30 CEST (GMT +0200)
Chess Tactics Server has served
103,327,013 problems to
78,704 registered tacticians from 143 countries.