What exercises eliminate wrist pain or strengthen the wrists?

Hard to answer: Obviously you can strengthen the wrist by working on strengthening the wrist flexors and wrist extensors. Its hard to say what is causing your pain, but strenghtening will help unless the exercises you are doing exacerbate the wrist pain you are having.

6 pack hand exercise: are good for the hand AND wrist. Strong grasp is part of good wrist function. Additional exercise involve the forearm muscles. The fingr flexors and extensors and the forearm extensor and flexors cross the wrist. Biceos and Tricep exercises are inportant to and doing those work the wrist. AS FAR AS PAIN, exercise may not be a solution to wrist pain and any pain should be EVALUATED BEFORE exercise