[Retros] recent improvements
Joost de Heer
joost at sanguis.xs4all.nl
Mon Dec 18 14:58:01 EST 2006
Mario Richter schreef:
> Joost wrote:
>>> 1 Pe7xd8=N
>> I find this hard to believe. Francois Labelle (using my computer) did an
>> exhaustive search for all 11-ply games to see if there were any games
>> determined by the last move, and the only one found was Peter Roessler's
>> 6. g7xf8=N#
> The line above only says that there is only one *correct* (i.e. single-
> solution) SPG in 11 plies which ends with Pe7xd8=N#.
> There are other games in 11 plies ending with Pe7xd8=N#, e.g.
> 1.a4 b6 2.e4 d6 3.e5 Ke8-d7 4.exd6 Kd7-c6 5.dxe7 Kc6-b7 6.exd8=N#,
> but they do not constitute are correct SPG ...
OK. My apologies for misinterpreting your results.
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