[Retros] Five White pieces, same square-colour

[Eric Angelini]

Solution now here (bottom of page):
http://www.cetteadressecomportecinquantesignes.com/EchFiveEasyPieces.htm
Best,
É.



-----Message d'origine-----
De : Eric Angelini 
Envoyé : dimanche 27 décembre 2009 19:10
À : The Retrograde Analysis Mailing List
Objet : Five White pieces, same square-colour

Hello RetroFans,
 
+---+---+---+---+---+---+---+---+

| r | n |   | q | k |   | n | r |

+---+---+---+---+---+---+---+---+

| p | p | b |   |   | b | p | p |

+---+---+---+---+---+---+---+---+

|   |   | p | p | p | p |   |   |

+---+---+---+---+---+---+---+---+

|   |   |   |   |   |   |   |   |

+---+---+---+---+---+---+---+---+

|   |   |   |   |   |   |   |   |

+---+---+---+---+---+---+---+---+

|   |   |   |   |   |   |   |   |

+---+---+---+---+---+---+---+---+

| P | P | P | P | P | P | P | P |

+---+---+---+---+---+---+---+---+

| R | N | B | Q | K | B | N | R |

+---+---+---+---+---+---+---+---+
16+16 
 
Remove 5 white pieces that are placed
on the same colour-square and reach
the new position in 11.0 moves.
 
(example: remove Ra1, b2, Bc1, d2
and f2, which are on dark squares)
 

|   |   |   |   |   |   |   |   |

+---+---+---+---+---+---+---+---+

| P | . | P | . | P | . | P | P |

+---+---+---+---+---+---+---+---+

| . | N | . | Q | K | B | N | R |

+---+---+---+---+---+---+---+---+
 
... and try to reach the hereunder new
position in 11.0 moves :
 
+---+---+---+---+---+---+---+---+

| r | n |   | q | k |   | n | r |

+---+---+---+---+---+---+---+---+

| p | p | b |   |   | b | p | p |

+---+---+---+---+---+---+---+---+

|   |   | p | p | p | p |   |   |

+---+---+---+---+---+---+---+---+

|   |   |   |   |   |   |   |   |

+---+---+---+---+---+---+---+---+

|   |   |   |   |   |   |   |   |

+---+---+---+---+---+---+---+---+

|   |   |   |   |   |   |   |   |

+---+---+---+---+---+---+---+---+

| P | . | P | . | P | . | P | P |

+---+---+---+---+---+---+---+---+

| . | N | . | Q | K | B | N | R |

+---+---+---+---+---+---+---+---+
11+16
 
Which are the 5 white pieces you'll
have to drop out of the chessboard
in order to complete the task?
 
Best,
É.