This position came about due to very poor handicapping, and general incompetence on both parts, or something. Anyhow, black to play. Play at a, b or c? (Could Hollgor or Dieter or some other "God of Go" suggest points d and e please?)
Anyhow, here we have the proverb at work, Corner is gold, Edge is silver, center is grass...
Dieter: There is no exercise. The only advice I can think of is: play again without handicap.