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Damian Reca vs Hermanis Karlovich Mattison
Paris Unofficial Olympiad (1924), Paris FRA, rd 1, Jul-??
Bogo-Indian Defense (E11)  ·  1/2-1/2

ANALYSIS [x]

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Kibitzer's Corner
Dec-02-19  woldsmandriffield:


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After misadventures in a R&P ending, Mattison is quite lost. His only chance for survival lies in making something of the passed c-pawn and hoping for an opportunity to blockage the passed enemy pawns.

60..c5 61 Kf4 c4! the best practical chance. Suddenly White has only one winning continuation.


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62 e5? (Natural but wrong. 62 Rb6! c3 63 Rb4! c2 64 Rc4 Ra2 65 Kf5! [65 e5?? Ra4 -+] 65..Ke7 66 e5 [66 Rc7+?? Kd6 idea ..Ra5+, ..Rc5 -+] 66..Kd7 67 f4 Rb2 68 Rc5 Ra2 69 Kg5 +-)

62..Rd3 63 Ke4 Rd1? (Even more natural but also wrong. 63..Rd2! draws by preventing Rg2 and turning the c-pawn into a real threat) 64 Rg2?! (Simpler was 64 Rg7+ Ke6 65 f4! Re1+ 66 Kd4 Kf5 67 Rf7+ Ke6 68 Rf6+ +-) 64..Ke6 65 f4? (White needed to back-track: 65 Rg6+ Kf7 66 Kf5! c3 67 Rc6 Rc1 68 f4 +-) 65..Re1+ 66 Kd4 Kf5 67 Rf2 Re4+ 68 Kc3


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Having achieved all he could hope for in this ending, Mattison now falters inexplicably (is the game score correct?):

68..Kg4? 69 Rf1? (Missing the lethal 69 f5! Rxe5 70 f6 Re8 71 f7 Rf8 72 Kxc4 Kg5 73 Kd5 Kg6 74 Ke6 +-) 69..Kf5 draw agreed.

Dec-03-19
Premium Chessgames Member
  jessicafischerqueen:

<woldsmandriffield>

Yes good point. The score is from olimpbase here: http://www.olimpbase.org/pgn4web/an...

I would say it's very likely to be correct, though as you point out, with 68...Kg4? Black throws the game away, something neither player seems to have noticed.

I think the idea was to try to draw by chasing the White Rook up and down the f-file, with the idea that the Rook is necessary for white to progress. It isn't, as you show- 68...Kg4 69.f5! and then if Black tries to go forward with his plan 69...Kg3 then 70.f6! Kxf2 and one of White's pawns will eventually promote without help from the lost Rook, because after 70...Kxf2 Black's King is too far away from the action:


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