this is a large hedgehog but it still counts

I'll be honest with you, i only know it from the amis book. you've just given me a reading assignment i guess, and those are always welcome

this is where i expected the original thread to go. can't say I'm disappointed by what emerged instead, but still..

99% certain it's the stalemate, the race is trivial to assess from any distance at any non-bullet tc

and one last finesse: if after ke4 kf6 kf3 black tries a4 (diag1) white has to make two only moves in a row: b4! Ke5 (diag 2) ke3!, shouldering the black king away. The plan then is to achieve the position on the third diagram with black to move, and then white gets to play kf4, take on g3, and win

After ke4 kf6 kf3 ke5, you can still go wrong by playing kxg3, which would allow a4!, and after bx bx kxh2 kd4 bc6 kc3 bxa4 kb2 black is suddenly safe! Instead, it's time to ensure the bishop will protect the all-important a pawn by playing a4 ourselves, and then we can finally start collecting

.. instead of playing a4, ensuring that the pawn ending is winning since white can just head over towards the b4 pawn now and happily give up the bishop for the one on g3. However, there is still some care required: