Does waiting for d4 (h5, c3 h4, d4 e5xd4, c3xd4 h3) produce a better tempo? It seems the better choice to me, but I'm not sure. It ends the same, but the black king and queen has a better position?
I don't know what you mean by waiting for d4. The d-pawn will sit waiting for the black e-pawn to advance to e4, then capture it. If black initially moves his h-pawn, White King moves Kd5 and has a clear line to block promotion at h1; it is then too late to block it by moving pawn to e4.
good puzzle.next time a bit harder
And in my case black got a poor position and checkmate ))
But 4. ... Kd8 prevents white from promoting.
Why not 1...h4? I don't see why Black has to give away a pawn.
that was fairly easy, but it was a good puzzle.
Because the White King can make a run for the corner and catch the pawn. But after the move actually played, there's either a White pawn in the way of his own King, or (if White doesn't take) the centre pawn is queening instead.
Chess geometry is a very interesting topic.
Today's problem reminds me of the following classical study of Richard Reti:
Black has to move twice with the king in order to prevent White's pawn from queening- and these are sufficient for White to catch the pawn. Here, after 1... e4 2.dxe4 White needs another two moves to create a threat to queen himself, so that Black has to move the King once.
Here, after 1... e4 2.dxe4 You mean in todays problem!
And black wins a tempo.
Ehh.. I don't think the pawn sacrifice is all that needed...
its ok... ^_^