G. P. Jelliss
Chessics #9, problem 285, October 1980
Eagle. Serieshelpmate in 7.
This piece is another in the family of bifurcating hoppers like the Moose, and is shown as an inverted Bishop.
The Eagle moves like a Grasshopper but lands on the cells to left or right of the hurdle.
[French aigle, German adler].
In a serieshelpmate Black makes a series of moves, without White moving, to reach a position
where White can give mate in one move.
Solution:1.Be8 2-4.Kd8 5.Rc7 6.Qd7 7.Nc8 for Ee5
Double check over movable hurdles, R and B.
The Q and S can intervene to stop either check, but not both.