Messigny Chess: Instead of a normal move either side may interchange the positions of any pair of like pieces (including kings) of different coulours. Such an interchange may not immediately be reversed by the other side.
No.1389Chris Feather England original – 23.03.2019
h#2 (4+5)
b) Rc6→f6 ; c) & Pf2→e2 ;
d) & Pa7→d7
Messigny Chess
{for animation exchange of places is shown as capturing and
appearance, like Qa8<->Qf3 as Qxf3 (+Qa8)}
a)
1.f2-f1=Q a7-a8=Q 2.Qf1-f3 + Qa8*f3 [+bQa8] # {(Qa8<->Qf3)}
b) bRc6-->f6
1.f2-f1=S a7-a8=S 2.Sf1-e3 + Sa8*e3 [+bSa8] # {(Sa8<->Se3)}
+c) bPf2-->e2
1.e2-e1=R a7-a8=R 2.Re1-e5 + Ra8*e5 [+bRa8] # {(Ra8<->Re5)}
+d) wPa7-->d7
1.b2-b1=B d7-d8=B 2.Bb1-e4 + Bd8*e4 [+bBd8] # {(Bd8<->Be4)
(C+ by Popeye 4.79)}
Matching black and white promotions, but the main thematic idea is the need for Black to check at move 2 (else 3.K<>K!). Thus for example not 2.Qf2? in the first part, nor 2.Sg3? in the second, etc. (Author)
