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happinessisawarmgun 20 ( +1 | -1 )
"Chess" by Edward Lasker If anyone has this book could you please look at section 50 and explain it to me. It is based on king/rook endings and under promoting a pawn to a rook instead of a queen . I cannot see the logic .
brunetti 6 ( +1 | -1 )
I have not the book but know K+R endings; if you may post the position/s I try to help you.

Alex
happinessisawarmgun 13 ( +1 | -1 )
"end-game study" by S.Saavedra . black king on h1,black rook on e5 ,white king on g6 , white pawn on f7. Black plays ...Re6 + .
2 Kg5 , Re5 +
3 Kg4 , Re4 +
4 Kg3 , Re1
5 Kf2 , Re5
6 Pf8 (R) !!?
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parrvert 4 ( +1 | -1 )
Are you sure it's not 5...Re4? Because then 6.f8=Q Rf4+ 7.Qxf4 stalemate.
happinessisawarmgun 1 ( +1 | -1 )
Sorry , yes 5......,Re4
happinessisawarmgun 9 ( +1 | -1 )
Lasker says white threatens Rh8 mate but why can white not do this with the queen ?
zdrak 24 ( +1 | -1 )
Because if the pawn is promoted to a queen black forces a draw by stalemate - see parrvert's post above. By promoting "only" to a rook white still gets the same mating threat, without allowing the stalemate option.
happinessisawarmgun 10 ( +1 | -1 )
Sorry if I sound stupid but why does white not have the same mating threat with Qh8 ?
happinessisawarmgun 4 ( +1 | -1 )
Sorry.....I see it now....king cannot move to h2 !!
gunnarsamuelsson 4 ( +1 | -1 )
search this book instead Chess basics by George Costanza