[Retros] Roberto's idea

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

Hello,

> The mate-delivering piece captures its stationary counterpart in the
> course of the solution.
> AF&YR
> 1.Sb1-c3   Pe7-e5   2.Sc3-e4   Ke8-e7   3.Se4-f6   Ke7-d6
> 4.Sf6xg8   Kd6-c5   5.Pb2-b4   Kc5xb4   6.Bc1-a3   Kb4xa3
> 7.Qd1-b1   Bf8-c5   8.Qb1xb7   Qd8-e7   9.Qb7-b5   Bc8-b7
> 10.Sg8-f6   Bb7-e4   11.Sf6-d5   Be4-g6   12.Sd5-c3   Pe5-e4
> 13.Sc3-b1

Here is a shorter alternative with the Bf8 :

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   Pb7xa6
7.Pb4-b5   Fc8-b7   8.Rc3-b4   Fb7-d5   9.Pc2-c3   Pc7-c6
10.Dd1-a4   Fh6-f8

Best,

Nicolas.