Endgame Puzzle Challenges

Isn't endgame one of the most important and difficult parts of chess? I saw probably the first chess book of my life today and noted that it had some very interesting endgame questions that I had never met in a game before. I was hoping we could use a thread to pose challenging endgame positions to help our game. I hope to see some good thoughts up. Here's a sample problem in the book

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Here's a better puzzle I saw in someone's profile...can't remember who.

Originally posted by Ramned
Here's a better puzzle I saw in someone's profile...can't remember who.

[fen]b7/8/k1B5/8/K7/8/8/1R4B1 w - - 0 1[/fen]

White to move, mate in 2. not really much of endgame tactic but I thought it's a good one 😉

Originally posted by Ramned
[fen]4k3/8/5PKP/3b2P1/8/8/8/8 w - - 0 1[/fen]

Can black draw or can white win?
Damn. I can't remember who's move it is 😠

Originally posted by Red Night
It must be black's move because otherwise Kg7 makes it pretty simple for white.

Originally posted by Ramned
[fen]6k1/5p1p/8/4p3/8/4K1P1/7P/8 w - - 0 1[/fen]

Black to move.

Can white draw or can black win?

Originally posted by Exuma
f5?

Originally posted by Ramned
[fen]6k1/5p1p/8/4p3/8/4K1P1/7P/8 w - - 0 1[/fen]

Black to move.

Can white draw or can black win?

Originally posted by Ramned
g4...