Nice!

Done

At the one varioantion...the move 10. c3...white must move pawn to c4, not c3. And then...King white will be on d5 or f5, after that will capture the black pawn.

Because the white king can reach the pawn, he has a straight diagonal line to it which is the shortest path. But if he moves the e pawn first, the resulting moves will break that diagonal line and the king cant reach the h pawn in time.

Hmmm.  It is after 3am EST Feb. 15th.  The Feb 14th puzzle is still the daily puzzle. 

Any way, piratch, is still correct in pointing out that in chessmaster12344's line:  1... e4 2. dxe4 ( 2. Kd6 exd3........,

2. ... exd3 is a BLUNDER. 
black should move 2 ... e3 - promote his e pawn and win.

I guess.

SZ.

My basic reasoning I gave for the line in those diagrams was basd on two principles

1. The Black pawn and King would have an easier time of neutralizing the duo white is holding

2. moving the duo forward before securing the passed pawn from promoting was a slightly safer, though not as expedient line (Benko would say do in 20 moves what you can do in 2, apparently he had a good run with this idea, scoring endgame wins against both Smyslov and Petrosian in their heydays).

Still, you make a valid point. The win is a win whether you go by way of the Autobahn or a dirt road. Great insight.

Halla 

In 1  I love endgames!

I've seen it before

end games need more concenteration

good one