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This puzzle is one of the reasons FIDE changed the chess rule about promoting. NOW the rule says pawns must promote to a piece of the SAME color!
Ahh I see, of that's very clever. I didn't even know you could promote to an opposite-coloured piece though? Now, from this though, I can see why.
It also seems unlikely that there would have been a rule about NOT promoting to the opposite colour. :)
"But nothing says I can't!"
That would be quite the interesting arguement in a tourny though in that position, The rules dont specifically state I cant promote to a different color....
The rules says i can't move a knight the same way i would a rook, that doesn't mean to say i can.
Guys, he is correct. The old rules allowed for a piece to be promoted to any color, or to not be promoted at all. Scources: http://hebdenbridgechessclub.blogspot.com/2011/02/hardest-chess-problem-in-world.html
FIDE Laws of Chess 3.7e
"When a pawn reaches the rank furthest from its starting position it must be exchanged as part of the same move on the same square for a new queen, rook, bishop or knight of the same colour."
That basically means you cannot promote a pawn to a piece of the opposite color. If it was legal before, it isn't now.
You used to be able to not promote and have a dummy pawn which can't move.