If number of players is from 151 to 200:
1) players are seeded in to 8 groups for round-robin games;
2) the best 8 players of Groups A, D, E, F form Division 1A, but the best 8 players of Groups B, C, F, G form Division 1B (64 players in total) where round-robin is played. Mutual results are counted; Other players form lower divisions (see table how many) without counting of mutual results;
3) the best 16 players of Division 1A play in basic play-off against the best 16 players of Division 1B.