Wonderful problem showing transformation of battery (doubled)! Fitting tribute to Petkov.
Change of half battery to two full batteries with one of the original half battery pieces acting on its original…
There is a White half-battery and a Black half-battery. In each solution [using in turn the two components of each…
397. Nice idea and finales, though underpromotion is easier in Circe or Madrasi. I know it is impossible in this…
Thanks Geoff. The set play idea is very neat and the interchange of W-moves is probably valuable. But the play…
Here is an example using set play. h#3* white Qg3 black Kd8 Rc8 LIf6 1...Qg3-g7 2.LIf6-h8 Qg7-f8+ 3.LIh8-e8 Qf8-d6# 1.Rc8-c7…
Ganapathy, in your original version, the white queen was free with lot of choices. But reducing two units is a…
3... Bd8xf6-d5 # reveals what is the correct 1st black move
Is move 1. - Bf6-f8 really possible in the diagram position?
It has already been reported to the Popeye development team that the latest Popeye v4.63 has trouble handling neutral pawns…