Endgames
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1h1g21.h12?-f5g4, 2.h23-g4f3, 3.h3g4 (or h34)-f3g2 and now 4.a12 doesn't work because black promotes on g1 (or h1 if white is on h4) and captures the white man.
f5g4
2g3f32.g2h3?-g4f3 3.h3g4 (or h34)-f3g2 with the same result as on 1.h12.
---g4h3
3f3e4Now the white man is out of reach.
h3g23...h32? 4.ah1+
4a12Generally speaking the white man must have cleared the f-g-h-files by the time the black man reaches g2. One exception is covered in the next example.

Sorry, you need a Java enabled browser to view the Dameo Player! Black goes for the corner and white cannot prevent him from doing so, NOR can he clear the g-h-files - yet he wins on a technicality.

1h1g2Of course 1.h12 works just as well - this is not a stand alone problem but a footnote to the previous one.
e4f3
2g2h3f3g2
3a12g2h1
4ah2xGenerally speaking the white man must have cleared the f-g-h-files by the time the black man reaches g2. This was an exeption.