3 sentences

1. 他是一位职业棋手。

   tā shì yī wèi zhí​yè qí​shǒu.

   He is a professional chess player.

   Source: Dong Chinese Dictionary

2. 这两位棋手斗得难解难分。

   zhè liǎng wèi qí​shǒu dòu de nán​jiě​nán​fēn.

   The two chess players fought to a standstill.

   Source: Dong Chinese Dictionary

3. 这两名顶级棋手在决赛中展开了一场精彩的较量。

   zhè liǎng míng dǐng​jí qí​shǒu zài jué​sài zhōng zhǎn​kāi le yī chǎng jīng​cǎi de jiào​liàng.

   These two top players engaged in a brilliant contest in the final.

   Source: Dong Chinese Dictionary