[Retros] Solutions Orbit July 2005

[Nicolas.Dupont at math.univ-lille1.fr]

Thanks to Gerd for its nice cook of 1620. I apologyse for having not be
able to find it by myself.

Paul's attempt :

> 27... Se7  replaced with 27...Sf6

doesn't avoid that cook because it is possible to play earlier Qe8-e3 and
Qe3-c1 in order to permit black's king to return home. For example the
last two moves can be 30.Qc1 Ke8 31.axb3 Bf8

I'm just going back from holidays (without Internet as I want to still be
maried !) and only got time to present a new idea :

1.h4 e5 2.h5 e4 3.h6 e3 4.hxg7 h5 5.a4 h4 6.a5 h3 7.a6 h2 8.axb7 Rh3
9.bxc8=N Rg3 10.fxg3 exd2+ 11.Kf2 a5 12.e4 a4 13.e5 a3 14.e6 a2 15.e7 Ra3
16.exf8=N Rb3 17.cxb3 d5 18.Qc2 d1=B 19.Ng6 Bg4 20.Be2 d4 21.Bf3 d3 22.Ne2
d2 23.Re1 dxc1=B 24.Nd2 h1=R 25.Nf1 Rh8 26.Nh4 Bh6 27.Rad1 Ne7

Same play for the moment but

28.g8=R+ Bf8 29.Rg5 a1=R 30.Qg6 Ra8 31.Na7 Bc8.

What is sure is that  the promoted rook must now come from g8, avoiding
Gerd's cook. But the 2 moves by Qd1 can be another source of trouble...

Nicolas.