H\u1eadu v\u1ec7<\/figcaption><\/figure>\nD\u1ef1a tr\u00ean n\u1ec1n t\u1ea3ng ch\u1ee9c n\u0103ng v\u00e0 v\u1ecb tr\u00ed thi \u0111\u1ea5u, c\u00e1c chuy\u00ean gia \u0111\u00e3 ph\u00e2n h\u1eadu v\u1ec7 th\u00e0nh 3 lo\u1ea1i. \u0110\u00f3 l\u00e0 h\u1eadu v\u1ec7 trung t\u00e2m, h\u1eadu v\u1ec7 bi\u00ean v\u00e0 h\u1eadu v\u1ec7 bi\u00ean t\u1ea5n c\u00f4ng. M\u1ed7i nh\u00f3m h\u1eadu v\u1ec7 \u0111\u1ea3m nhi\u1ec7m m\u1ed9t nhi\u1ec7m v\u1ee5 ho\u00e0n to\u00e0n kh\u00e1c bi\u1ec7t. Khi thi \u0111\u1ea5u tr\u00ean s\u00e2n, c\u00e1c h\u1eadu v\u1ec7 lu\u00f4n b\u1ed5 tr\u1ee3 vai tr\u00f2 cho nhau.<\/span><\/p>\nV\u1ecb tr\u00ed<\/strong><\/h3>\nH\u1eadu v\u1ec7 trung t\u00e2m (Trung v\u1ec7) c\u00f3 k\u00fd hi\u1ec7u qu\u1ed1c t\u1ebf l\u00e0 CB. Trung v\u1ec7 th\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng \u1edf ch\u00ednh gi\u1eefa c\u1ee7a d\u00e0n h\u1eadu v\u1ec7. C\u00e1c c\u1ea7u th\u1ee7 \u0111\u1ea3m nhi\u1ec7m v\u1ecb tr\u00ed n\u00e0y ph\u1ea3i li\u00ean t\u1ee5c ng\u0103n ch\u1eb7n ti\u1ec1n \u0111\u1ea1o \u0111\u1ed1i ph\u01b0\u01a1ng ghi b\u00e0n. Trong chi\u1ebfn thu\u1eadt b\u00f3ng \u0111\u00e1 hi\u1ec7n \u0111\u1ea1i, \u0111\u1ed9i h\u00ecnh thi \u0111\u1ea5u b\u00f3ng \u0111\u00e1 th\u01b0\u1eddng g\u1ed3m hai h\u1eadu v\u1ec7 trung t\u00e2m. \u0110i\u1ec1u n\u00e0y gi\u00fap t\u1ed1i \u01b0u h\u00f3a kh\u1ea3 n\u0103ng ng\u0103n ch\u1eb7n \u0111\u1ed1i ph\u01b0\u01a1ng v\u00e0 b\u1ea3o v\u1ec7 khung th\u00e0nh.<\/span><\/p>\nH\u1eadu v\u1ec7 bi\u00ean l\u00e0 c\u00e1c c\u1ea7u th\u1ee7 ho\u1ea1t \u0111\u1ed9ng \u1edf nhi\u1ec1u v\u1ecb tr\u00ed kh\u00e1c nhau tr\u00ean ph\u1ea7n s\u00e2n nh\u00e0. C\u00e1c k\u00fd hi\u1ec7u ph\u1ed5 bi\u1ebfn c\u1ee7a h\u1eadu v\u1ec7 bi\u00ean l\u00e0 FB\/RB\/LB. Vai tr\u00f2 c\u1ee7a h\u1eadu v\u1ec7 bi\u00ean l\u00e0 ng\u0103n ch\u1eb7n c\u00e1c \u0111\u01b0\u1eddng chuy\u1ec1n b\u00f3ng c\u1ee7a \u0111\u1ed1i ph\u01b0\u01a1ng trong khu v\u1ef1c c\u1ea5m \u0111\u1ecba. B\u00ean c\u1ea1nh \u0111\u00f3, c\u00e1c c\u1ea7u th\u1ee7 n\u00e0y c\u00f2n k\u00e8m ti\u1ec1n \u0111\u1ea1o \u0111\u1ed1i ph\u01b0\u01a1ng s\u00e1t sao nh\u1eb1m gi\u1ea3m thi\u1ec3u kh\u1ea3 n\u0103ng t\u1ea5n c\u00f4ng.<\/span><\/p>\nH\u1eadu v\u1ec7 bi\u00ean t\u1ea5n c\u00f4ng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 h\u1eadu v\u1ec7 t\u1ef1 do. Nhi\u1ec7m v\u1ee5 ch\u00ednh c\u1ee7a lo\u1ea1i h\u1eadu v\u1ec7 n\u00e0y l\u00e0 t\u1ea5n c\u00f4ng. C\u00f3 hai h\u01b0\u1edbng h\u1eadu v\u1ec7 bi\u00ean t\u1ea5n c\u00f4ng c\u01a1 b\u1ea3n l\u00e0 c\u00e1nh tr\u00e1i v\u00e0 c\u00e1nh ph\u1ea3i. C\u00e1c c\u1ea7u th\u1ee7 \u0111\u1ea3m nhi\u1ec7m v\u1ecb tr\u00ed n\u00e0y c\u00f3 kh\u1ea3 n\u0103ng di chuy\u1ec3n linh ho\u1ea1t tr\u00ean di\u1ec7n r\u1ed9ng. Khi thi \u0111\u1ea5u trong \u0111\u1ed9i h\u00ecnh 3-5-2, vai tr\u00f2 c\u1ee7a h\u1eadu v\u1ec7 bi\u00ean t\u1ea5n c\u00f4ng \u0111\u01b0\u1ee3c ph\u00e1t huy ho\u00e0n h\u1ea3o.<\/span><\/p>\nNh\u1eefng c\u1ea7u th\u1ee7 t\u1eafc b\u00f3ng hay nh\u1ea5t Th\u1ebf Gi\u1edbi<\/b><\/h2>\n