Diamant-Lid
Climber, Mathematician, adrenalin junkie and lover of all things intellectually beautiful
Klubs
The Killer Derivatives
2 289 lede
Team Schweiz-Suisse-Svizzera
3 136 lede
ChessDojo
5 229 lede
Ginger GM Fan Club
2 056 lede
Queen's Indian Defense
421 lede