No, Black can't queen on f1 because the Bishop will take it.

Over the next few moves White wins the last two pawns with his King, then the Bishop and Knight ending is difficult but doable against the best defence, so in problem terms it counts as a win.

Complicated

50 move rule does not start until there are no more captures or pawn moves.  But I was wondering how white can capture to pawns for free...

nice

good puzzle

4. Nxd4

O_o

good!

4. Nxd4 

This was a weird puzzle,of cource you start with Q sac chose Qf1 so K would block pawn on f2 next move to check again was Bb5+...KxNe1, 3.Nc2+...Kd2, 4.NxQd4,never saw a clear way to mate be cause there was'nt one,took Q because it looked like the most logical next move.need to go back and look how deep I can go from where puzzle left you.Thank's Chess.Com.Good day chess heads.It's hard to figure this out because you do not know black's next move,black will move pawn to f1 making it a Q,and the black Q is in position to check white changing the whole game.Wrong again B take's pawn f1,I don't get it.After reading some post's it sound's like white has it's work cut out for him

easy but not so bad puzzle

good one, but you have to know how to checkmate ;)

You showed several time's Nf3+ when it was not a check,had a hard time figuring out some of the move's order.Thank's for the annaysis,you did a decent job,I can't illustrat a puzzle and show it as most of you guy's do,I give you credit,I'm wrong your Nf3 check's were from the white Q so you did do a good job

@paulified, the chess engine states if it's check or not, it's not something people creating the puzzles do.
It's a discovered check, the white queen is checking the black king once the knight moves, solved by simply taking and checking the white queen with a 2nd queen.

seems like luck to me

Chess is a game of pure luck 

after 4. Nxd4 doesn't black just moves the pawn and make a queen on f1 which results in you losing the game?

Really Good Puzzle. Cute Smash! Thank You, chess.com

fail, what a loser. Got nothing better to contribute than a failing post like that.