10 Apr '06 12:12>
White plays and mates black in two moves. Not as easy as it looks at first sight!
Originally posted by ilywrinYou didn't mention a third option for black's last move (in the assumption that castling is possible): dxc. This, however would also mean a promoted bishop on b1, which you proved impossible.
A very nice puzzle:
Let's assume for a moment that black CAN castle:
then either his last move was either A) 0...b2-b1B or B)0...e7-e5.
If it is the second B) then obviously:
1.dxe6 (en passant) gives a solutin.
Now lets us consider the other option, i.e Black's last move was indeed:
A) 0...b2-b1B. This is howewer impossible. because of the discrepancy ...[text shortened]... n. Can we establish that Black CANNOT castle, or no?
I will have to think about it some more.
Originally posted by Mephisto2White is missing six units; Black needs to make six pawn captures. All missing White units were captured by Black pawns.
[fen]r3k3/ppp5/2p2P2/3PpK2/8/NP1R4/p1P3P1/1b3N1R w q - 0 1[/fen]
White plays and mates black in two moves. Not as easy as it looks at first sight!