I recommend my books to practice tactics before playing OTB tournaments
Klub
Chess.com - Polska
52.857 Anggota
Chess.com Community
52.967 Anggota
Klub Zbigniewa Paklezy
4.289 Anggota
Esportovnia - PL club
220 Anggota
Erasmus+ Chess
1.145 Anggota