[Retros] Andrey's idea without any extra capture.

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

I got the following one :

1.Pd2-d4   Pe7-e5   2.Re1-d2   Ff8-a3   3.Pb2-b4   Fa3xc1
4.Rd2-c3   Fc1-h6   5.Pe2-e3   Pg7-g5   6.Ff1-a6   Pb7-b5
7.Cg1-f3   Fc8-b7   8.Cf3-e1   Fb7-f3   9.Pd4-d5   Pe5-e4
10.Rc3-d4   Pc7-c5   11.Rd4-e5   Pf7-f6   12.Re5-d6   Fh6-f8

Is it possible to construct a shorter pg with the same constraints ? (a
check-mate is given by a piece returning home  after having captured its
stationary counterpart, this capture being the only one in the whole
game).