|conditions||'Black Functionary', 'Black Passes if Stuck'|
|Black Functionary:||A black unit (included King) may only move, capture or check when observed by any enemy unit(s).|
|Black Passes if Stuck:||Black passes when unable to move.|
No. 1532 David Antonini &
Nicolas Dupont France
original - 29.08.2020
Black Passes if Stuck
Solution: (click to show/hide)
(C+ by Jacobi)
Some fairy conditions are useless for proof games as there is no available move in the initial game array. It is the case for example with Functionary: a piece may only move when observed by enemy.
The new Jacobi release offers the possibility to avoid this issue using two new tricks: the condition applies only to black and when stuck (e.g. at its first move during a proof game) it passes.
Our problem is the first illustration of this new couple of possibilities. It shows a double Schnoebelen queen (on squares b8 and h8), as well as a (6 moves-long) switchback from Sb1. Each white move is thematic, in particular this side is at-home on the diagram position. It is C+ Jacobi.