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 MedalErlendm35522 Norway 2240
Silver Medalfastkicker11456 France 2208
Bronze Medalbyakuugan132655 United States 2132
4Soryu74682 Japan 2114
5Faramir (IM)74339 Argentina 2103
6morpy110533 Spain 2101
7cactus81682 United Nations 2071
8Lazarillo424 United States 2050
9aryantari6917 Norway 2041
10blueeyed3134 United Nations 2034

20 actions this minute
TacticianCountryRatingProblemRatingTime [s]
TOLescespe Colombia 1601p59458 14815.9
rodri71 Chile 1214p38490 9864.3
danhanouna Switzerland 1674p25954 1739
Polyglot Germany 1387p31426 12415.2
cactus8 United Nations 2073p30701 1959
birds United States 1153p55900 1371
pesda Czech Republic 1258p17352 11906.4
TOLescespe Colombia 1603p32484 1670
rodri71 Chile 1213p02182 132012.1
Polyglot Germany 1387p28749 149010.7
cactus8 United Nations 2072p33409 18500.7
danhanouna Switzerland 1675p41470 156415.3
felino Spain 1395p26500 1525
birds United States 1155p01474 1341
cactus8 United Nations 2072p20726 16611.2
pesda Czech Republic 1257p32292 12746.8
TOLescespe Colombia 1601p35266 17456.0
elinso Uruguay 1115p42071 1365
cactus8 United Nations 2072p20385 15950.7
danhanouna Switzerland 1673p59783 16985.2

Welcome !
Latest 24h newbies
HALALOOLIAUnited Nations
Red1979United Nations
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2014-11-23 21:40 CET (GMT +0100)
Chess Tactics Server has served
98,853,400 problems to
75,041 registered tacticians from 143 countries.