Tough!
Mate in 3 (more Nalimov surfing)
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White's first move took me 3 tries. The 3rd move was easy. The second move ..... it hurt my brain.... for a very, very long time.......
Call me crazy, but I don't understand "puzzles" like this. White is going to win. Black should have probably already resigned.
Whether it's 3,4, or 6 moves, a win is a win.
Yes, it was rude of Black to not resign. White should have forfeited (simply to teach his opponent some manners).
This was actually the first position I punched in on Nalimov just now...and it turned out to be unique! lol