Tan cong va chan bong
Tan cong, chan bong va gioi han cua cau thu hang sau trong bong chuyen
Cach cac quy dinh FIVB hien hanh ap dung cho cu danh tan cong, vach tan cong, quyen chan bong, gioi han khi tan cong pha phat bong doi phuong va Libero.
The nao la mot cu danh tan cong
Moi hanh dong dua bong ve phia doi phuong, tru phat bong va chan bong, deu duoc coi la cu danh tan cong. Cau thu hang truoc co the hoan tat tan cong o bat ky do cao nao neu cham bong trong khong gian thi dau cua minh, dong thoi tuan thu cac gioi han rieng ve pha phat bong va duong chuyen cua Libero.
Tan cong hang sau va vach tan cong
Cau thu hang sau co the hoan tat tan cong o bat ky do cao nao neu bat nhay tu phia sau khu truoc. Khi bat nhay, chan khong duoc cham hoac vuot vach tan cong; sau cu danh, cau thu co the tiep dat trong khu truoc. Neu tan cong tu khu truoc, bong luc cham khong duoc nam hoan toan cao hon mep tren cua luoi. Neu bong hoan toan cao hon, do la loi.
Ai duoc chan bong va o dau
Chi cau thu hang truoc duoc hoan tat pha chan bong. Nguoi chan co the dua tay qua luoi neu khong can tro doi phuong, nhung khong duoc cham bong ben kia luoi truoc khi doi phuong thuc hien cu danh tan cong. Chan pha phat bong cua doi phuong bi cam. Cau thu hang sau hoac Libero hoan tat hay tham gia mot pha chan bong hoan tat se bi tinh loi, va Libero cung khong duoc co gang chan bong.
Gioi han cua Libero va tan cong pha phat bong
Libero khong duoc hoan tat tan cong khi bong nam hoan toan cao hon mep tren cua luoi. Neu Libero chuyen bong bang cac ngon tay tren dau tu khu truoc, cau thu khac khong duoc hoan tat cu tan cong tren luoi tu duong chuyen do; cung dong tac tu ngoai khu truoc co the duoc tan cong theo cac quy dinh khac. Khong cau thu nao duoc hoan tat tan cong pha phat bong doi phuong khi bong o khu truoc va hoan toan cao hon luoi.