[Retros] "hit team" - a little challenge

andrew buchanan andrew at anselan.com
Mon Jan 30 14:11:07 EST 2017

Dear Bernd,
Thanks very much for the paper. It reminded my that Alexander Kislyak (I believe in his book "On the Track of Chess Pieces") created 64 proof game checkmates. BK was mated in turn on each square of the board.
Noam proposed a synthetic problem with 6... Nf3#. I have found a solution. The final move is a capture but that's probably unavoidable.
All the best,Andrew

    On Sunday, January 29, 2017 3:19 PM, Bernd Gräfrath <retromode at web.de> wrote:

 Dear retro-friends, I have come across a paper which may be relevant for Andrew's request (see below): "Checkmate in a proof game", in Quartz 37 of August 2012. It is not signed, but was most probably written by Paul Raican. The text ist available online at http://quartz.chessproblems.ca/pdf/37/Quartz37.pdf Best wishes, Bernd Gesendet: Samstag, 21. Januar 2017 um 03:20 Uhr
Von: "andrew buchanan" <andrew at anselan.com>
An: "The Retrograde Analysis Mailing List" <retros at janko.at>
Betreff: [Retros] "hit team" - a little challengeHi retro friends, Yaakov Mintz recently posted the following in PDB (P132046): www.janko.at/Retros/d.php?ff=rnbqkbn1/ppp1pPp1/4P3/8/8/8/1PP1PP1P/RN2KBNRSPG in 8.5 It shows a pure mate, and except for the "hit team" of White pieces actually involved in the mate, all pieces including bK are in apparent starting position (homebase). I wondered if there are other proof games like this. Here's one I found: www.janko.at/Retros/d.php?ff=rnbqkb2/ppppp1p1/6Q1/8/8/8/PPPP1PPP/RNB1KBNRSPG in 5.5 Wikipedia tells us: a pure mate is a checkmating position in chess in which the mated king and all vacant squares in its field are attacked only once, and squares in the king's field occupied by friendly units are not also attacked by the mating side (unless such a unit is necessarily pinned to the king to avoid it interposing to block the check or capturing of mating unit). Note this is not a model mate, which would have the additional requirement that all officers of the mating side (except possibly the king) are involved in the mate. Can you find any others? Particularly it would be good to avoid non-standard material (i.e. the diagram should not show 2 white queens etc). Hope this is an interesting challenge for some. Regards,
Andrew _______________________________________________ Retros mailing list Retros at janko.at https://pairlist1.pair.net/mailman/listinfo/retros
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