Dear Joost, thank you for the detailed explanation. With respect to the "first and second option", how does a solver…
The default is that one can promote to any non-royal piece present in the default set of the current condition…
A question about promotion to fairy pieces: If there is no Grasshopper in the initial position of a chess problem,…
Czech Republic is the official name, Czechia is used shortened name.
I don't know, if better, but I have different ones for Dawson Triathlon 🙂 Concerning Joost's version, it solves nicely…
And Na7 to a3, -Ge1? The unity of the first move is changed from a nightrider move to a move…
In my opinion a twin. In general, for me is in the HSX much more important economy of Black, as…
What's worse? A unused grasshopper in each solution or a twin b) Ge1->b4?
Unfortunately here is a short (and dualistic) solution in 25. 15.Kf2xBf3(+wKe1) Bd2-e3+ 16.Ke1-f2 Be3-d2+ 17.Kf1xBe2(+wKe1) Bd1-e2+ 18.Kf2-f1 Bd2-e3+ 19.Ke1-f2 Be3-d2+…
In 8, 2.Kh2xBHg2(>Ke1) seems to be a shortcut.