twohalf: Upper left corner Black to move:
F19 - H18 - C17 - F18 - G19 - E17 - H19 - G16 - J19
After this move white looks dead for me. E19 and G18 are miai. Am i missing anything?
caranthir: Thanks for your comment. Considering your sequence, you are right. Therefore, H19 should be answered by J19 instead of G16. Updated sequences.
F19 leads to ko, marked it as wrong and added refutations. Also added a stronger resistance to E17.