Pg7 can't be a shadow, it's in its original place! The point is, if we replace an illegal piece with…
In my opinion, the illegal piece could not get to the position with a regular step from its original position.…
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Yes, this problem is also great. But the e5bB is not an illegal piece, but a promoted piece.
There is no definition of shadow piece. It behaves like it's a real piece, but since it is illegal, it…
In position A), field a8 stands for a8 (legal) bB and field h8 stands for h8 (illegal) bB. in position…
We are very glad you like our chess problem! Yes, it has a funny but serious foundation. The idea is,…
Twin position could be different if the 2 wP's exchange their initial game array position.