Author: Andreas Stabel
Date: 10:37:57 02/17/00
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On February 17, 2000 at 12:43:17, Heiner Marxen wrote: >On February 17, 2000 at 04:03:37, Andreas Stabel wrote: > >>On February 16, 2000 at 14:30:40, Vincent Lejeune wrote: >[snip] >>>This study was posted some years ago (around 1997) in the news : >>> >>>[D]8/Bk3p1p/1P3p2/KP2n2p/1P1p4/1Pp2p2/B1P5/7B w - - >>>Mate in 270 moves >>> >>>Good luck ! ;) >> >>I'm sorry to say that this is "only" a mate in 180 or so, but still very nice. >>Here is one more which is very deep. >>[D]bBrb1B2/P1n1r2p/1Kp1Pb1p/2pk1P1p/5P2/1P2pP2/1pP1P3/1R4n1 w - - 0 1 >> >>Regards >>Andreas stabel > >After some minutes staring at it I see a bunch of threats and defenses, >but nothing strikes me. I'd like to get a solution hint :-) >What is the source for this problem (author etc)? > >Heiner To copy what information I have: --- Start quote --- The Blathy problem is given in The Encyclopedia of Chess by Ann Sunnucks (New York: St. Martin's Press, 1970) on page 285. No solution is given but "The solution consists of a manoeuvre of 16 moves repeated 17 times." I have set out the EPD file with the problem as given by Sunnucks: bBrb1B2/P1n1r2p/1Kp1Pb1p/2pk1P1p/5P2/1P2pP2/1pP1P3/1R4n1 w - - c0 Published in Vielzugige Schachhaufgaben by O. T. Blathy.;id Mate in 290 by O. T. Blathy; --- End quote --- The moves before the 16 moves sequence are: 1. Rd1+ Bd4 2. c4+ Kd6 3. Rg1 Bc3 4. Rd1+ Bd4 The idea is that the king has to move to a space where it can change the parity of the move and then go back to threaten the black bishop which moves between a8 and b7. After 16 or 17 moves black is forced to move a pawn and so on. In the end black will have run out of postponing moves and will loose. The same theme is used in the mate in 270 above. Regards Andreas Stabel
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