Problem 521 & 521.1: Valerio Agostini, Antonio Garofalo & Seetharaman Kalyan - Fairy (Kamikaze, NightriderHopper, ContraRookHopper) |
![]() ![]() ![]() An update: a version 521.1 with co-author Seetharaman Kalyan is included.
![]() 1.CRc5 kBxf6 2.kNHxe4 kRf4#
1.CRc4 kRxf6 2.kNHxd6 kBe7#
![]() Kamikaze: Pieces disappear from the board when they capture.
ContraRookHopper: Moves like on Rook lines, but only hopping over a hurdle which must be adjacent to the contrahopper and may land anywhere on the line beyond.
NightriderHopper: Hops, on a straight line of knight moves, to the next square beyond any one unit, e.g. NHa1-g4, provided that c2 is vacant and e3 occupied. |
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Comments
I also wonder if the nightrider hoppers are really essential to the theme. They are used only to force the black move order. The white pawns d6/e4 can be captured by any kamikaze black piece or pawn and the solution will work.
Here is one possibility without these unwanted features. B1 moves are now pure selfblocks.
H#2
white Pc5d3 Ke7 Rf2
white Kamikaze rf7 bh2
black rlb7 Pa4f4 Ka3
black Kamikaze qb5
(6+5)
1.RLb7-b3 kRf7*f4[-wkRf4]
2.kQb5*c5[-bkQc5] kBh2-d6 #
1.RLb7-b4 kBh2*f4[-wkBf4]
2.kQb5*d3[-bkQd3] kRf7-f3 #
Antonio
If you have no further suggestions to improve the strategy, you are welcome to publish it as joint effort.
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