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Topic: Endgame Puzzle 3 (Read 1969 times) |
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Fritzlein
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Re: Endgame Puzzle 3
« Reply #1 on: Mar 31st, 2011, 9:49am » |
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I love this puzzle already. My first impression was that there was more than one way for Silver to win, but after working out a few lines, it suddenly feels like nothing wins. What's the over/under on my solution time? 
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chessandgo
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Re: Endgame Puzzle 3
« Reply #2 on: Mar 31st, 2011, 12:56pm » |
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I can't see anything either. Gold being able to play R->a4 on the next move crushes most of the moves I can come up with.
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jdb
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Re: Endgame Puzzle 3
« Reply #3 on: Mar 31st, 2011, 4:10pm » |
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I double checked in case there was a typo.
The puzzle is correct.
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Hippo
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Re: Endgame Puzzle 3
« Reply #4 on: Mar 31st, 2011, 6:04pm » |
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on Mar 31st, 2011, 12:56pm, chessandgo wrote:| I can't see anything either. Gold being able to play R->a4 on the next move crushes most of the moves I can come up with. |
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Ra4 is not good answer to cd5 or ce4 what were my first intuition after realizing non cat move leads to goal in 2 by 4/5 opposition. 1 cat step loses to Ra4 and goal/cat freeze next turn. So at least 2 cat steps are required ...
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rbarreira
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Re: Endgame Puzzle 3
« Reply #5 on: Mar 31st, 2011, 6:16pm » |
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When I analysed this with briareus, performance varied between runs but it still looks like this is the hardest puzzle so far...
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aaaa
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Re: Endgame Puzzle 3
« Reply #6 on: Mar 31st, 2011, 9:13pm » |
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Maybe it involves a repetition fight.
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Hippo
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Re: Endgame Puzzle 3
« Reply #7 on: Apr 1st, 2011, 11:27am » |
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Fortunately I have appropriate parity for my post
It seems to me position cc5 ra7 Ra4 Dh7 after 2 first turns is forced, but the first turn has two options ... with ra7 or rb7 and cg5 or cf5. Than D*, Ra3 ca4, Dc4, Ra1 ca2, and r starts it's way to h5 so finally R is captured in C3.
Oh no, cb5 rb7 is better as gold would play Ra6 Df7 otherwise. So the solution rb7 cf5 seems to be unique.
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| « Last Edit: Apr 1st, 2011, 11:53am by Hippo » |
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chessandgo
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Re: Endgame Puzzle 3
« Reply #8 on: Apr 1st, 2011, 12:59pm » |
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Awwwww nice, thanks for the tip jdb.
EDIT: lol, now I understand the parity thing ^^
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| « Last Edit: Apr 1st, 2011, 1:00pm by chessandgo » |
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chessandgo
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Re: Endgame Puzzle 3
« Reply #9 on: Apr 1st, 2011, 1:00pm » |
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Spoiler: solution attempt:
Come'on mate, you gotta warn us that the rabbit is supposed to win on the freaking furthest goal square Well, actually, I wondered whether that was the most elaborate April's fool joke in the history of ever, giving a hard puzzle the day before, planning to follow-up with a seemingly easy tip which actually doesn't work due to a cunning defense so that people think they got the solution... But well, if that's the case I'll be happy to be (one of) the fool(s)
2s rc8ws cg6sw
3g Rc2wwnn
3s cf5wwww
4g Dh7wwws
4s cb5w Ra4s ca5s
5g De6ssww
5s rb7eees
6g Dc4we ca4e Ra3n
6s re6seee
I love how the weak-piece side wins in your clue puzzle. I had that position on the board and thought it was won for the strong piece-side. But no, we win because our piece faces the enemy rabbit on the edge of the board, which is a standard good-defense pattern. Lately, it seems that half the time I look at a position I assess it improperly, but every time someone shows me why, I go "hey, but that's in my book!"
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| « Last Edit: Apr 1st, 2011, 1:05pm by chessandgo » |
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Hippo
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Re: Endgame Puzzle 3
« Reply #10 on: Apr 1st, 2011, 3:04pm » |
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OK definitely I agree, pushing the Rabbit to a1 is losing move, rabbit should start it's run to h5 as fast as possible.
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Adanac
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Re: Endgame Puzzle 3
« Reply #11 on: Apr 2nd, 2011, 10:02am » |
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on Mar 31st, 2011, 8:43am, jdb wrote:
Another great endgame puzzle The move 2g pass is missing from the puzzle when I click on this link though.
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| « Last Edit: Apr 2nd, 2011, 10:02am by Adanac » |
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jdb
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Re: Endgame Puzzle 3
« Reply #12 on: Apr 2nd, 2011, 10:54am » |
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on Apr 2nd, 2011, 10:02am, Adanac wrote:
Another great endgame puzzle The move 2g pass is missing from the puzzle when I click on this link though.
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Hmmm, anyone know how to modify a puzzle?
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Fritzlein
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Re: Endgame Puzzle 3
« Reply #13 on: Apr 2nd, 2011, 2:02pm » |
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on Apr 2nd, 2011, 10:54am, jdb wrote:| Hmmm, anyone know how to modify a puzzle? |
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I'm pretty sure you can't modify it; you have to re-enter it from scratch and delete the first attempt. 
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Fritzlein
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Re: Endgame Puzzle 3
« Reply #14 on: Apr 2nd, 2011, 9:34pm » |
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OK, finally got it with the help of the solution to Puzzle 4. Like chessandgo, I reached the Puzzle 4 position in analysis and mis-evaluated it. Then I tried to solve Puzzle 4 as a crutch, and came up with a bogus solution! There is way more going on in these miniatures than one might imagine. Thanks again, jdb, for providing us with such entertaining instruction.
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| « Last Edit: Apr 5th, 2011, 6:46pm by Fritzlein » |
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