Thank you very much for your detailed reply!
On No.1684 (JC&BM)
The link cannot be opened!
On No.1684 (JC&BM)
Yes, this problem is also great. But the e5bB is not an illegal piece, but a promoted piece.
On No.1684 (JC&BM)
There is no definition of shadow piece. It behaves like it's a real piece, but since it is illegal, it…
On No.1684 (JC&BM)
In position A), field a8 stands for a8 (legal) bB and field h8 stands for h8 (illegal) bB. in position…
On No.1684 (JC&BM)
We are very glad you like our chess problem! Yes, it has a funny but serious foundation. The idea is,…
On No.1684 (JC&BM)
Twin position could be different if the 2 wP's exchange their initial game array position.
On No.1684 (JC&BM)
The composition is a joke, but even if we follow your logic, then in gemini b) both solutions are shadow:…
On No.1684 (JC&BM)
I think this is a very good chess joke, with a brilliantly original conceit. In a joke problem, the solver…
On No.1684 (JC&BM)
Thank you, Julia!
On No.1683 (LK)