Nc1 pins Bf7 via b7-a5-h3-g1, as well as the Grasshoppers d3 & d7.
It is itself pinned by Rc7, which is pinned by Gf4 (d6 jump).
This one is pinned by Ge4 (b4 jumper).
Gd3 pins Re2 (b5 jump), Bf7 pins Rb3.
Re2 pins Ge4 & Be1.
a)
1.d2-c3!d7-d5 2.♔d2f4(could not be played earlier because Pd7 would have prevented Kd2) 3.♔d4♕d6# (Pd5 has become Queen).
b)
1.d2-e3!d7-d3(wQ will have to be intercepted) 2.♔d2♗e6 3.♔c3♗e5# wK, now as a pawn, cannot move to b4 ;
and c4 is controlled by Pf7 !
Without Pe3, we would parry by Pf2-d4!
4 - 2# with bulgarian neutral Grasshopper
Petkov, P. 2020
#2(9+9+1) 🨫e7: bulgarian neutral Grasshopper
bulgarian Grasshopper Grasshopper who can only play if the jumper can make a grasshopper move without a capture.
When several movements of the jumper are possible, the choice belongs to the side of the neutral Grasshopper
(does it play as white or black ?)
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