"I fear not the man who has practiced 10.000 openings once, but I fear the man who has practiced one opening 10.000 times."
Klubs
Chess.com - Polska
50 170 lede
MARIANCZELLO CLUB
48 767 lede
Infoszach
7 810 lede
Polski Związek Szachowy
24 647 lede
Chess University - Poland
1 669 lede