I recommend my books to practice tactics before playing OTB tournaments
Félög
Chess.com - Polska
52.680 Meðlimir
Chess.com Community
51.878 Meðlimir
Klub Zbigniewa Paklezy
4.292 Meðlimir
Esportovnia - PL club
220 Meðlimir
Erasmus+ Chess
1.145 Meðlimir