lǎo / shī / ràng / wǒ / men / yán / jiū / zhè / pán / qí / de / qí / pǔ / zhǎo / chū / guān / jiàn / de / yí / bù

老师让我们研究这盘棋的棋谱，找出关键的一步。

The teacher asked us to study the record of this game and find the critical move.