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Subject: Dameo problem 8 (solution 7) rss

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christian freeling
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Dameo rules: wiki - mindsports - ig game center

Signs used are '?' for a bad move, '!' for a good one, '??' for a catastrophe, '!!' for a great find, '+' for a win and '=' for a draw or an even position.
_______________________________________________________________________

Procedure
I will upload a new Dameo problem every week with the solution of the previous one. That way there will be two problems to consider at any given time.
For all problems it's "White to move and win".
Solutions are given in successive diagrams and for each diagram it's "Black to move" (unless otherwise indicated).
________________________________________________________________________

Problem #8.


White c3 c5 d4 e3 e4 f3 f4 g5 - Black a5 b5 d6 d7 e6 e8 g7 g8
White to move and win.

Poll
White to move and win - what is the key move?
  Your Answer   Vote Percent Vote Count
c3b4
0.0% 0
c34
0.0% 0
c3e5
0.0% 0
c5b6
33.3% 1
c56
33.3% 1
d4b6
0.0% 0
d45
0.0% 0
d4e5
0.0% 0
e3b6
0.0% 0
e35
0.0% 0
e3h6
0.0% 0
e4d5
33.3% 1
e45
0.0% 0
e4f5
0.0% 0
f3d5
0.0% 0
f35
0.0% 0
f3g4
0.0% 0
f4e5
0.0% 0
f45
0.0% 0
f4h6
0.0% 0
g5f6
0.0% 0
g56
0.0% 0
g5h6
0.0% 0
Voters 3
This poll is now closed.   3 answers
Poll created by christianF
Closes: Mon Apr 4, 2016 6:00 am


-------------------------------------------------------------------------------------

Here's problem #7 and its solution.


White b4 d4 f1 g1 g2 g3 g4 h2 - Black a4 b7 d7 e6 f6 f8 h5 h8

Solution problem 7:
Spoiler (click to reveal)

There were two one entries and one was spot on! I must confess that it was not the intended solution, so I've violated problemists' etiquette once again, but at least it is based on the same combination as the intended one, albeit not quite that efficiently. Here it is:

1.g45 axe4
2.f1h3 hxf5
3.h2f4 The choice between f5x3 and exg4 is trivial.
3...f5x3
4.g3xa7 f6e5 White cannot yet promote and Black goes for a1.
5.h34 e5d4
6.h45 d4c3
7.h56 c3b2
8.h67 h8x6
9.a78K +


Nine moves for a clear win. The other entry favoured 1.b4a5 which would seem spot off. White cannot save the man on d4 and Black's road to promotion is wide open.

The intended solution eliminates the 4...f6e5 'problem' by taking care of it beforehand:


1.g15


1...axe4
2.g46 The choice between hxf5 and fxh6 is trivial.


2...hxf5
3.f1h3


3...fxh6
4.h2f4 The choice between f5x3 and exg4 is trivial.


4...f5x3
5.g3xa7


5...h6g5
6.g2f3 +

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Harmonica
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In the first mentioned solution after blacks 4. ... f6-e5 there is another easier solution.

5. g2-f3 e5-d4
6. f3-e4 d4xf4
7. g1-f2 f4-e3
8. f2-f3 e3xg3
9. h3xf3

or

5. g2-f3 e5-e4
6. f3-f4 e4xg4
7. g1-f2

... and the black piece is stuck. Any movement of pieces on fields f8 or h8, will immediately lead to promotion by the white piece at a7.
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christian freeling
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anemaat wrote:
In the first mentioned solution after blacks 4. ... f6-e5 there is another easier solution.

5. g2-f3 e5-d4
6. f3-e4 d4xf4
7. g1-f2 f4-e3
8. f2-f3 e3xg3
9. h3xf3

or

5. g2-f3 e5-e4
6. f3-f4 e4xg4
7. g1-f2

... and the black piece is stuck. Any movement of pieces on fields f8 or h8, will immediately lead to promotion by the white piece at a7.

Right on both accounts. I'm glad you like analysis and I regret I don't. It's my main problem. As an inventor, I didn't need deductive thinking all that much. As a player, I forget a game after the last move and only keep certain aspects of it on the fly. Gets me all the way to mediocrity sometimes!

So I'm a poor problemist I fear.
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