Across

3 to gain, to profit, to win
6 to be strong
9 to conquer
11 to grow strong, to be able
14 to conquer, defeat
15 to defeat,to scatter, to pour out
18 physical strength
19 very strong
20 to play,sport, imitate

Down

1 gymnasium; wrestling school
2 to bind, conquer, win, excel
4 to compete, to assert, to contend
5 to play
7 game
8 chess game
10 to compete against, to fight against
12 physical beauty, principle
13 game
16 hunting, the chase
17 to run back and forth