BQM 527

    Keywords: Life & Death, Problem, Question
Can White live here?  

This is from a rapid 4 dan game on KGS I wonder whether Black (thecaptain) could have killed White with B1. After the Black top edge group is alive (the very least B1 achieves), the top left corner seems to be in bad shape. What is the correct sequence for Black there? (The Black stones on the left are alive, the stones which guarantee that are not shown however.)

Can White live here? A  
Can White live here? A2 (Not unconditionally.)  
Can White live here? B  
Can White live here? B2 (Not unconditionally, black+circle helps killing the top left however)  

BQM 527 last edited by tapir on January 7, 2011 - 01:05
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