Chessboxing is a sport which     1     punching power with mental power. There are 11    2     in all, with one round of chess and then one round of boxing.     3     are those whose mental    4     equals their physical power. People usually think that boxers aren’t clever, which is not     5     true. The sport     6     that boxers can be smart and smart people can be tough.

In the boxing ring of in a Berlin Club, a boxing match is on. Frank Stoldt, a strong German, is seated at a table, and beside him is his opponent, a     7     American boxer. For     8     reasons, the crowd is on Frank’s side, for he is a local player. Before the match started, Frank spent hours     9     his mind and muscles. And as a result of luck and hard work, the local hero checkmates his opponent and     10     the world title belt.