Recently, I completed a study of some corner capturing races, shoring up a hole in my understanding of how to evaluate the fighting liberties and ko resources present in different kinds of non-two-eyed corner groups.
For example:
In the process of learning how the fighting sequences in these corners worked, I ended up creating several dozen capturing race problems. In case anyone else is interested, here is the SGF with all the problems. I designed it offline in CGoban, so I don't know how well it actually works in Eidogo - feel free to try it either way or in any other sgf editor.
Warning: There may be mistakes in this problem set! I'm just a lowly dan player, and my reading is far from perfect
. Many of these problems could be very hard if you are weaker than strong SDK, indeed many were quite hard for me. If you find a mistake, let me know.EDIT: Fixed a glitch in the SGF that caused Eidogo to erroneously display "Black to play" in some of the problems. They are all status problems and should be solved from both sides.
Attachment:
I did find the small-corner-with-hane positions to actually be some of the hardest. Good reading practice. 