White to move. White has one shot to win or else the Black Pawn on c2 can do serious damage. How should White proceed? 
Chess Daily News from Susan Polgar
Maximizing the opportunity
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Bonjour Susan,
1.Rf8+ Kh7
2.Ng5+
If, 2.Rh3+? it’s draw.
2…Kg6
3.Nxe4+ Kh7
4.Nf6+ Kh6
5.Rh8#
From Paris with love ;o)
well that was a nice dance by white.
1.Rf8+ Kh7
2. Rh3+ Kg6
3. Nf4+ Kg5
4. Rg3+ Kh4
5. Rh8+ Nh5
6. Rxh5++
Ah, very nice. I almost missed something very basic here. If
1. Rf8+ Kh7
2. Ng5+ Kh6 instead of … Kg6
White has only one way to proceed, since 3. Rh8+ falls to 3. … Kg6 and White can’t continue the checks without allowing the Black king to cross the f-file. similarly, 3. Rh3+ Kg6! and Black wins. Luckily
3. Nf7+!! Rxf7 (or … K moves 4. Rh8 mate)
4. Rh8 mate
This was harder for me to see, and I think more amusing/interesting, than the 2. … Kg6 line.