10/6/2011 - Converting in Efficient Manner

sultaninx

interesting

GOINDIAGO

excellent illustration of how to avoid forced draw and win the game(not killing black's rook with white's rook)

hieutrung
You have solved this problem!
3. Rh8+
satsat

nice...

EvenBounce

simple puzzle

drshark

nice

rbk1

good one!

m_majid_khan

m_majid_khan

good

ooo000ooo

You Pawn Broker you...

Tublu

i like it

dufferps

Beautiful.  After 1. Kc6, black cannot move his king; he must move his rook.  Unless he can do something about it, pawn to d7+ will be checkmate.  There are two ways black can "do something about it" i.e. be in a position to capture the white pawn at d7.  However, whichever one he chooses (... Rxh7 as in the daily puzzle or Rd8) leaves black vulnerable to mate from a queen or rook at h8. 

Not counting delaying interpositions by the black rook, I see two alternative lines if black chooses the 1. ... Rd8 approach.
1. ... Rd8, 2. cxd8=Q+   Kxd8, 3. h8=Q#
or
1. ... Rd8,  2. h8=Q    Rxh8,  3. Rxh8#

 For white a less efficient, but still effective line would be:
1. ... Rd8,  2. d7+   Rxd7,   3. h8=Q+   Rd8   4. Qxd8#

funky_fresh

easy

cfrench49

Nice puzzle.

jollyrodger

if we all think its too easy then make some suggestions, as our friend says, its good for learning Smile

Zhanhui1995

easy

paulified22
rule of thumb,to promote or in this case win,position King in front of pawn.1,Kc6,black had only one piece to play,Rh7,2,pd7...R8#
hilaking

:)

EvenBounce

easy

ZacWilson

easy to fall into the stalemate trap with Rxh7 instead of d7+.  A good lesson to always be on the look out for an accidental stalemate.