[Retros] Pins

[afretro]

Hello to all,
Pinmates can constitute a category in its own right:
1.Pe2-e3   Pf7-f6   2.Qd1-g4   Ke8-f7   3.Qg4xd7   Qd8-e8   
4.Qd7xc7   Bc8-e6   5.Pd2-d4   Be6xa2   6.Pd4-d5   Ba2xb1   
7.Bf1-c4   Bb1xc2   8.Sg1-e2   Bc2-g6   9.Pd5-d6   
Let▓s not forget about multiple pins as well.
Best,
Andrey