nice endgame.
Hard but interesting endgame study

I lost on 4.Nd6 but struggle to find out why. I see the solution but it looks natural to potentially get a fork
I lost on 4.Nd6 but struggle to find out why. I see the solution but it looks natural to potentially get a fork
After 4. Nd6? you can play the exact same move sequence as in the solution line but on the last move the knight cannot go to g6 in order to be stalemated!
Btw, if black plays 3. ... Be2 then 4. Nd6! is the only drawing move. After 4. Ne5? Bh5! white is in the wrong tempo (zugzwang). The whole endgame is about having the move when you want it. Black would rather skip a move on most turns!
This is something that a person can solve in a week. Or two weeks.
Yep! But it helps when you recognize the finish with the last 2 moves which was already published in 2002 (you know the year of Anne-Marie's school). To solve this version you have to find the strategy behind it - which is more about the black moves than the whites. When black is about to win white drops a bombshell!
Good luck!