การแพ้ใดมีชัยชนะ 6 และแพ้น้อยกว่า 1741?
Which Losses has a Wins of 6, and an Against smaller than 1741?
df = pd.DataFrame(columns=['Losses', 'Wins', 'Against'])
df.loc[(df['Wins'] == 6) & (df['Against'] < 1741)]['Losses'].min()