Bill Robertie Challenge #153
How does Black play 6-1?
Bill Robertie Challenge Tag: Back Game
Bill Robertie Challenge #133
How does Black play 1-1?
Bill Robertie Challenge #122
Should Black double? If Black doubles, what should White do?
Bill Robertie Challenge #116
How does Black play 5-4?
Bill Robertie Challenge #112
How does Black play 6-5?
Bill Robertie Challenge #109
How does Black play 5-2?
Bill Robertie Challenge #107
How does Black play 6-2?
Bill Robertie Challenge #106
How does Black play 3-3?
Bill Robertie Challenge #105
(a) How does Black play 1-1?
Bill Robertie Challenge #103
How does Black play 3-1?