Question

эти предложения сделани в Present continuous:
 They are playing chess now
I am the happy at the moment
надо превратить в  Present indefinit, и Present Perfect

Answer 1

1. Present indefinit:
They play chess. I am happy.
2. Present Perfect:
They have played chess. I have been happy at that moment.
Но я точно не уверена.

Answer 2

They played chess yesterday
I have happy already