下棋
下棋 (xiàqí) means "to play chess" or "to play a board game." The verb 下 here specifically pairs with 棋 to form this activity expression. For example, 正在下棋 means "currently playing chess."
爸爸每天晚饭后都跟邻居下棋。
Bàba měi tiān wǎnfàn hòu dōu gēn línjū xià qí.
Dad plays chess with the neighbor every evening after dinner.
你会下棋吗?我教你吧。
Nǐ huì xià qí ma? Wǒ jiāo nǐ ba.
Do you know how to play chess? Let me teach you.
他们在公园里下棋,围了一圈人看。
Tāmen zài gōngyuán lǐ xià qí, wéi le yī quān rén kàn.
They were playing chess in the park, surrounded by a circle of onlookers.