Adds additional tests to the tabular best response code. Best values are taken from the existing implementation, which achieves the correct exploitability value. This is used to track down a regression in a different CL.
Adds additional tests to the tabular best response code. Best values are taken from the existing implementation, which achieves the correct exploitability value. This is used to track down a regression in a different CL.

PiperOrigin-RevId: 272316380
Change-Id: I7f8f6127497c6daf30ee3c6f9d77c00ebb3d81a9

deepmind/open_spiel,deepmind/open_spiel,deepmind/open_spiel,deepmind/open_spiel,deepmind/open_spiel,deepmind/open_spiel