Rook ending

() vs. ()
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[Event "N1"] [Site "France"] [Date "2010.11.13"] [Round "?"] [White "GL"] [Black "SL"] [Result "*"] [WhiteElo "2152"] [BlackElo "2196"] [Annotator "arna"] [SetUp "1"] [FEN "8/5p1p/1k4p1/4K2P/R4PP1/pr6/8/8 b - - 0 0"] [PlyCount "23"] 1... gxh5 2. gxh5 Rb5+ 3. Kf6 Ra5 4. Rb4+ Kc5 5. Rb1 a2 6. Ra1 Kd4 7. h6 Ke4 8. f5 $1 (8. Kg7 Kf5 9. Kxh7 Kf6 10. Kg8 Ra8+ 11. Kh7 Ra7 12. Kg8 Kg6 13. Rg1+ Kxh6) 8... Ra6+ $1 9. Kg7 (9. Kxf7 Kxf5) 9... f6 10. Kxh7 (10. Rf1 a1=Q 11. Rxa1 Rxa1 12. Kxf6 Ra6+ 13. Kg5 Kf3 14. f6 Ra5+ 15. Kh4 Rf5) 10... Kxf5 11. Kg7 Ra7+ 12. Kf8 Kg6 {black wins} *

"Must win" situation. How should black proceed ?

Sunday's rook endgame, key idea

"Chess teaches you to control the initial excitement you feel when you see something that looks good and it trains you to think objectively when you're in trouble." - Stanley Kubrick

Sébastien - Wilfried

[Event "Ste Foy"] [Site "?"] [Date "2010.08.29"] [Round "?"] [White "Poulet, S."] [Black "Farge, W."] [Result "*"] [SetUp "1"] [FEN "8/5p2/2p1k3/r3P1p1/2PK2Pp/P4R1P/8/8 b - - 0 0"] *

Black to play, a pawn down. How to draw ?
(not very difficult)

Chess is above all, a fight

As Emanuel Lasker said. He said that too :
Chess is a conflict, not between 2 intelligences, but between 2 wills.

() vs. ()
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Rook endgame

How should Black proceed ?
In this case what will be the result of the endgame ?