play into someone's hands
US /pleɪ ˈɪntu ˈsʌmwʌnz hændz/
UK /pleɪ ˈɪntu ˈsʌmwʌnz hændz/

1.
bermain ke tangan seseorang, menguntungkan seseorang
to do exactly what your opponent wants you to do, so that they gain an advantage over you
:
•
By arguing with him, you're just playing into his hands.
Dengan berdebat dengannya, kamu hanya bermain ke tangannya.
•
The opposition's mistakes played right into the government's hands.
Kesalahan oposisi bermain tepat ke tangan pemerintah.