Solved without Errors :) !
took me a while to see that bishop
+ + # good for first lesson to beguiners
3 seconds puzzle
7th page for 8th time
good mate thought the rook was going to mess it up at first.
Those long bishops... like police cars behind the bushes.
Surprised nobody mentioned this: you can also play bishop on second move, black has to block with knight or pawn and follow up with knight to C6 for mate.
I saw two ways to do it, for the second turn, c1 to g5
Bg5 is followed by pawn to f3. If Nc6 then Kf2. It becomes Mate in 4, not Mate in 3.
Yup ! - typo though Kf7 (not Kf2). - are you sure it's mate in four ? ( Bg4 )
What? NO QUEEN SAC?!!!!
Yep, mate in 4 after Q takes pawn. Didn't see that Kf2 at first...