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Subject: A Cannon puzzle rss

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Ralf Gering
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Black to win. A not so simple puzzle, which illustrates several rules of the game. [15 plies]
 
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Ralf Gering
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SOLUTION
Spoiler (click to reveal)

1. d5-f3! h7-g6, threatens to break up the Cannon
2. f5xg6 j7-i6(A)
3. g6-f7 i6-h5
4. f3-f4 h5-h4
5. f4-f5+ f9-f8
6. f7xf8 h4-g3
7. f8-f9++

If A:
2.... c6-d5
3. f3-f4 d5-d4(B)
4. f4-f5 d4-e3
5. g6-f7+ f9-f8
6. f7xf8 e3-f2
7. f8-f9++

If B:
3.... d5-e4
4. f4xe4 j7-i6
5. e4-f5 i6-h5
6. g6-f7+ f9-f8
7. f7xf8 h5-h4
8. f8-f9++


Many thanks go to Caleb the "cannoneer" and "russ" for pointing out several mistakes in the original diagrams.
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Caleb
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Shouldn't White's first move be h7-g6 to break up the cannon that will form?
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Ralf Gering
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Spoiler (click to reveal)
cannoneer wrote:
Shouldn't White's first move be h7-g6 to break up the cannon that will form?
Of course you are right. What do you think about the changed diagram and solution?
 
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Russ Williams
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Spoiler (click to reveal)
The first black move (retreat) seems impossible with the updated diagram, right?
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Caleb
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The only thing I'd change is black's #3, going g6-f7 to establish the cannon sooner.
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Caleb
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russ wrote:
Spoiler (click to reveal)
The first black move (retreat) seems impossible with the updated diagram, right?
Spoiler (click to reveal)

Wow, how did I miss that!!


And I wonder how long this thread will go, only containing spoiler text?
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Ralf Gering
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Spoiler (click to reveal)
russ wrote:
]The first black move (retreat) seems impossible with the updated diagram, right?
Oh, yes ... wondering what can be done ...
 
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Caleb
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Start black F5 at F6 and white at G7. Probably plays out mostly the same way, but I didn't check too closely.
 
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Ralf Gering
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Next trial ... I hope I'll learn this game some (not too distant) day
 
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