I got the idea for
this Puzzle during a fight between my Green Gang
and the Dark
Knight's team - along with Gotham's men and women in blue.
It took place in a Gotham district where blocks are arranged
in a very regular pattern ; my gang was trying
to capture Mayor Hill, and the Police and Batman were trying
to capture me.
I was on some building supervising
the operation, and it struck me how similar this all was
to a Chess game... when I suddenly got knocked to the ground
by Robin. I thought "well, Pawn checks King" ;
and later, taken to Arkham again, I made this little problem
up. I dedicate it to Batman's Brave Dark Soldier.