A Great Problem

  
Problem

A Great Problem


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Nicola Lupinacci    (2008-01-10 17:12:52)
A Great Problem

This is a problem created by Luigi CERIANI.

The question is: REBUILD AND WRITE ALL PAWN'S MOVES PLAYED BY WHITE!

ChessPosition (see diagram)

Good luck!
8
7
6
5
4
3
2
1
a b c d e f g h




Nicola Lupinacci    (2008-01-11 21:19:29)
?

I think it is too difficult...


Yugi Inving    (2008-01-12 21:08:07)
Multiple solution

can this problem have many answer


Nicola Lupinacci    (2008-01-13 03:16:37)
No

There is only one solution!


Thibault de Vassal    (2008-01-13 04:42:06)
What a study...

A really hard one, very interesting !


Kieran Child    (2008-01-13 10:32:30)
Pawn moves

I have: pawn on a2, takes pawn on b3, takes pawn on c4, takes pawn on d5, take bishop on e6, takes pawn on f7, takes knight on g8=rook.


Nicola Lupinacci    (2008-01-13 13:55:34)
Ok

The solution posted by Kieran is correct.

It is obivious that black last move was Nf7-h8+
but before this move It seems that white has no one...
So white moved something into h8, and the knight captured it, but what?

A Queen? impossible...
A Knight? impossible...
A Bishop? impossible, both bishops were captured in their stating position.
And then it was a Rock, a promoted Rock!

The only pawn that can promote is the a2 pawn.
Black doesn't make any capture with his pawn and it means that they were captured by the a2 pawn in their original columns.
And now then the pawn's move was:
Pa2:Pb3,
Pb3:Pc4,
Pc4:Pd5,
Pd5:Be6 (Becouse the e7 pawn is in its original position and this bishop couldn't be taken on g3),
Pe6:Pf7,
Pf7:Rg8=R (Becuose the balck rock cannot go away from the g8 h8 h7 corner)
The other moves were Pf2-f3 and Ph2:Ng3

Finally black a7 pawn promotes to a rock, but what rock? the h4 or the f5?
It is impossible to determinate!

REALLY CRAZY! :D