software engineer, father of two sons, amateur Olympic weightlifter, improving chess player
https://ratings.fide.com/profile/118155876
https://lichess.org/@/mamciek
Klubi
Liga Team Poland
287 članov
Team Poland
798 članov
PZSzach
354 članov
Infoszach
7.806 članov
The Jesse Kraai Club
95 članov