[Retros] Captureless exact proof game showing Nb8->b1 and Ng8->g1.

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

I found the following :

1.Cg1-h3 Pe7-e5 2.Ch3-f4 Ff8-a3 3.Pb2-b4 Cg8-f6 4.Fc1-b2 Cf6-e4 5.Fb2-d4
Fa3-c1 6.Cb1-a3 Ce4-g5 7.Ta1-b1 Cg5-h3 8.Tb1-b3 Ch3-g1 9.Tb3-h3 Cb8-c6
10.Pc2-c3 Cc6-a5 11.Dd1-a4 Ca5-c4 12.Da4-c6 Pa7-a5 13.Ca3-b5 Cc4-a3
14.Fd4-e3 Ca3-b1

Is it possible to construct it in fewer moves ?

Nicolas Dupont.