g15713: Diagram 40B on page 69 of Practical Rook Endings by Edmar Mednis White to play after 60...Kg7  click for larger view
This position after Black’s 60th move 60…Kg7 was analyzed by popular and respected chess writer and American International Grandmaster, Edmar Mednis (1982), Practical Rook Endings, Chess Enterprises, ISBN 0-931462-16-9. Unfortunately, the book is out of print but used copies are still available on the Internet at a reasonable price - Amazon, Bookfinder, etc. Mednis comments about Lombardy as follows: “Of course, he saw that the thematic approach was to advance further the f-pawn: 61 f5! Kh7 62 f6 Kg8 63 Kf2 Re4 (63… Rh3? loses to 64 Ra8+ Kh7 65 e6!) 64 Kf3 Re1 65 Kf4." Black to play after 65 Kf4  click for larger view
“However, he also saw that after the temporizing 65…Re2, White can’t win by the direct 66 Ra8+ Kh7 67 Rf8? because of 67… Re4+!! and a perpetual check with the Rook as White cannot capture it with-out allowing immediate stalemate. Thus White decided that the position after White’s 65th move “isn’t a clear win”. Perhaps not, but the winning chances after 66 Ra8+ Kh7 67 Ra7! Kg8 68 Rb7 are fantastic. After, for instance 68…Rh2? 69 Ke4! White’s King is ready to infiltrate via d5, d6, e7 and now 69…Rxh5?! loses to 70 Ra8+ Kh7 71 Rf8! Kg6 72 Rg8+ Kh7 73 Rg7+ followed by 74 Rxf7. My point is not that 61 f5! would have led to a 100% sure win, but quite definitely that it was the only rational direction in which to go.” Black to play after 68 Rb7  click for larger view
Thanks to FinalGen, a chess endgame tablebase generator for Windows, we now know this is a draw by Black playing any of the following rook moves:
68...Re1, Ra2, Rc2, Rd2 or Rh2 but Black would have had to be prepared to defend carefully like a porcupine. For example, after 68...Rh2 69 Ke4 and now 69 ...Rd2 is the only defense. 70 Rb1 and now 70...Rd8 is again the only defense. 71 Rg1+ and only 71...Kf8 holds. Black cannot allow his king to be cutoff on the h file when the White rook checks on the g file. |