[Retros] total homebase mate - task

raosorio at fibertel.com.ar raosorio at fibertel.com.ar
Mon Oct 16 23:16:24 EDT 2006

Nicolas Dupont suggested the task of a mate position after the comie back of a piece
to it's homesquare. This suggested to me the hard task of mate position where the
mateing side is at homebase. I've produced the following example,

24 single moves. 15 + 14 C+

1.Pc2-c4 Pe7-e5 2.Pc4-c5 Pe5-e4 3.Pc5-c6 Pe4-e3
4.Pf2xe3 Bf8-a3 5.Ke1-f2 Ba3xb2 6.Kf2-g3 Bb2-a3
7.Bc1-b2 Pd7-d5 8.Bb2-e5 Sb8-d7 9.Kg3-h3 Pd5-d4
10.Be5-g3 Pd4-d3 11.Pe2xd3 Ba3-f8 12.Sg1-e2 Sd7-b8

We should interpretate that this task requestes,
* All the mateing side officers at homesquare
* All the mateing side remaining pawns at homesquare
* Mateing side maximum number of pawns on the board/minimum moves number

There are many mate alternatives. Each mate position would have an intrinsic record.
Is there any one feseable in less than 24 single moves?

A very attractive alternative form PGs point of view is to include a Pronkin, wich should
considered as as a separeted task.

Roberto Osorio

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