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Old April 5th 17, 12:11 PM posted to rec.games.chess.misc,rec.games.chess.analysis
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A friend showed me the following [rather simple] little chess puzzle:

From the standard starting position, remove the BRa8 and the WPe2.
This is the position after White's 8th move. What were the first
7 moves?

Enjoy!

--
Andy Walker,
Nottingham.
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Old April 5th 17, 01:18 PM posted to rec.games.chess.misc
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On Wednesday, 5 April 2017 12:11:54 UTC+1, Andy Walker wrote:
A friend showed me the following [rather simple] little chess puzzle:

From the standard starting position, remove the BRa8 and the WPe2.
This is the position after White's 8th move. What were the first
7 moves?

Enjoy!

--
Andy Walker,
Nottingham.


The first 7 moves and White's 8th move, do you mean?
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Old April 5th 17, 01:23 PM posted to rec.games.chess.misc
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1nbqkbnr/pppppppp/8/8/8/8/PPPP1PPP/RNBQKBNR b KQk - 0 7
My first thought is that white has to play Nc3-e5-b6xa8-b6-e5-c3-b1.
So Black would have to get a knight to e2 and back again at the same time. But that seems hard to do in 7 moves. 6 is easy: Nc6-d4xe2-d4-c6-b8.
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Old April 5th 17, 01:26 PM posted to rec.games.chess.misc
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[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "New game"]
[Black "?"]
[Result "*"]
[PlyCount "13"]

1. Nc3 Nc6 2. Nd5 Nd4 3. Nb6 Nxe2 4. Nxa8 Nd4 5. Nb6 Nc6 6. Nd5 Nb8 7. Nc3 and that is the problem... Black is a move ahead.
I have seen other puzzles where the knights exchange places. I'll have another look in a minute.

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Old April 7th 17, 12:11 AM posted to rec.games.chess.misc
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On Wednesday, April 5, 2017 at 1:26:25 PM UTC+1, Offramp wrote:
[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "New game"]
[Black "?"]
[Result "*"]
[PlyCount "13"]

1. Nc3 Nc6 2. Nd5 Nd4 3. Nb6 Nxe2 4. Nxa8 Nd4 5. Nb6 Nc6 6. Nd5 Nb8 7. Nc3 and that is the problem... Black is a move ahead.
I have seen other puzzles where the knights exchange places. I'll have another look in a minute.


You can't waste a move with a knight, so the rook has to have moved:

1.Nf3 Nc6 2.Ne5 Nd4 3.Nc6 Rb8 4.Nxb8 Nxe2 5.Nc6 Nd4 6.Ne5 Nc6 7.Nf3 Nb8 8.Ng1


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Old April 7th 17, 11:09 AM posted to rec.games.chess.misc
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On Friday, 7 April 2017 00:11:40 UTC+1, Andrew B. wrote:
On Wednesday, April 5, 2017 at 1:26:25 PM UTC+1, Offramp wrote:
[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "New game"]
[Black "?"]
[Result "*"]
[PlyCount "13"]

1. Nc3 Nc6 2. Nd5 Nd4 3. Nb6 Nxe2 4. Nxa8 Nd4 5. Nb6 Nc6 6. Nd5 Nb8 7. Nc3 and that is the problem... Black is a move ahead.
I have seen other puzzles where the knights exchange places. I'll have another look in a minute.


You can't waste a move with a knight, so the rook has to have moved:

1.Nf3 Nc6 2.Ne5 Nd4 3.Nc6 Rb8 4.Nxb8 Nxe2 5.Nc6 Nd4 6.Ne5 Nc6 7.Nf3 Nb8 8.Ng1


Very good! I wouldn't have thought of that.
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Old April 7th 17, 11:28 AM posted to rec.games.chess.misc
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On Friday, 7 April 2017 11:09:10 UTC+1, Offramp wrote:
On Friday, 7 April 2017 00:11:40 UTC+1, Andrew B. wrote:
On Wednesday, April 5, 2017 at 1:26:25 PM UTC+1, Offramp wrote:
[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "New game"]
[Black "?"]
[Result "*"]
[PlyCount "13"]

1. Nc3 Nc6 2. Nd5 Nd4 3. Nb6 Nxe2 4. Nxa8 Nd4 5. Nb6 Nc6 6. Nd5 Nb8 7. Nc3 and that is the problem... Black is a move ahead.
I have seen other puzzles where the knights exchange places. I'll have another look in a minute.


You can't waste a move with a knight, so the rook has to have moved:

1.Nf3 Nc6 2.Ne5 Nd4 3.Nc6 Rb8 4.Nxb8 Nxe2 5.Nc6 Nd4 6.Ne5 Nc6 7.Nf3 Nb8 8.Ng1


Very good! I wouldn't have thought of that.


I did know that I was on the wrong track, because in a normal proof game there is only one possible line of play; so aiming the b1 knight to b6 cannot be right, because there are two routes: b1-a3-c4-b6 and b1-c3-e5-b6.

I should have used that clue to guess that it was the other knight that went across the board.
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Old April 7th 17, 02:22 PM posted to rec.games.chess.misc
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The beauty of these things is how every move is in the absolute correct place; you can't transpose moves.
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Old April 7th 17, 04:28 PM posted to rec.games.chess.misc
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On Fri, 7 Apr 2017 03:28:19 -0700 (PDT), Offramp
wrote:

On Friday, 7 April 2017 11:09:10 UTC+1, Offramp wrote:
On Friday, 7 April 2017 00:11:40 UTC+1, Andrew B. wrote:
On Wednesday, April 5, 2017 at 1:26:25 PM UTC+1, Offramp wrote:
[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "New game"]
[Black "?"]
[Result "*"]
[PlyCount "13"]

1. Nc3 Nc6 2. Nd5 Nd4 3. Nb6 Nxe2 4. Nxa8 Nd4 5. Nb6 Nc6 6. Nd5 Nb8 7. Nc3 and that is the problem... Black is a move ahead.
I have seen other puzzles where the knights exchange places. I'll have another look in a minute.

You can't waste a move with a knight, so the rook has to have moved:

1.Nf3 Nc6 2.Ne5 Nd4 3.Nc6 Rb8 4.Nxb8 Nxe2 5.Nc6 Nd4 6.Ne5 Nc6 7.Nf3 Nb8 8.Ng1


Very good! I wouldn't have thought of that.


I did know that I was on the wrong track, because in a normal proof game there is only one possible line of play;



That reminds me of one of my favorite puzzles:

A game goes

1. f3 ?
2. Kf2 ?
3. Kg3 ?
4. Kh4 ? mate

What were black's four moves?

Why does what you said remind me of that? Because there are two very
slightly different solutions.
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Old April 8th 17, 05:46 AM posted to rec.games.chess.misc
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On Friday, 7 April 2017 16:28:50 UTC+1, Ken Blake wrote:

That reminds me of one of my favorite puzzles:

A game goes

1. f3 ?
2. Kf2 ?
3. Kg3 ?
4. Kh4 ? mate

What were black's four moves?

Why does what you said remind me of that? Because there are two very
slightly different solutions.


My very first thought is that the last move might be ....e5 or ...e6#

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