a) 1...e3 2.♗e5🨍c5 this move became possible with the liberation of the square d4 3.♗f3🨍d5 this move became possible with the release of the e4 square .
this move sets up a battery Mao c5 Mao d5 4.♔e4🨍e7# the King is in check after the release of the d5 square and has no escape square
b) 1...🨍h5 2.♗c2🨍g5 gives access to the square f4 for the Black King and sets up the battery Mao h5 Mao g5 3.♔f4f3 4.♗f5🨍f7# King is in check after the release of the g5-square and has no escape square
Reciprocal batteries and echo-chameleon.
h#3 Circe with neutral pawns
a captured piece is reborn on its original square if it is free, otherwise it disappears .
: pawn which can be played by both sides .
A neutral pawn is promoted to a neutral piece
4.n♖f7exf8=n♘ (+n♕d8)# Triple check, but the role of nQd8 is limited to controlling d6, c8, e8 and... d8,
because 5...Kxd8 would revive a neutral Queen on d1.
#2 with Locust
kind of Grasshopper that "eats" the sautoir, which is necessarily an opponent piece.
Like the Grasshopper, it lands just behind the sautoir
1...♗d6! 2.🨊xc3→d3+🨐xe5→d5!
1.♘b2! ~ 2.♘e6# 1...♗d6 2.🨊xc3→d3# 1...♖d6 2.🨊xf2→e3# Levman theme, say the experts. Semi-beotians will be content to notice the Novotny try and the defensive Grimshaw,
while appreciating the finesse of the refutations.
serial h#6 with Grasshoppers and Double Grasshoppers
moves like a Queen but needs a sautoir behind which to land.
This move is only possible if the square behind the sautoir is empty or occupied by an opponent's piece
as its name indicates, this piece performs 2 successive Grasshopper movements
Per OLIN 2012
ser-h#6(3+6) 🨥a6, f7, g8: Grasshoppers b) 🨐a6, f7, g8: Doubles-Grasshoppers
b)a6, f7, g8: Doubles-Grasshoppers
1.♔c6 2.DGd2 3.♔d5 4.DGd6 5.DGc6 6.DGe6♖h5# "It is a bit surprising that the (more mobile) Double Grasshoppers are closer to their initial positions in the mate" (J. Lorinc).
h#2 Take&Make
a capturing piece is required to make a movement with the characteristics of the captured piece immediately after capture.
This movement must not be a capture
b)a5-->f7
1.♘c6♗xc4→a4 2.♔xe3→e8dxc6→e7# Characteristic mate: bK cannot capture e7 because he would have to play a white pawn move and would end up in e8.
#3 AntiCirce
a capturing piece returns to its native square if it is free. Otherwise, the capture is illegal.
However, we distinguish the case where the capture is made on the rebirth square,
which is thus occupied at the beginning of the move by an opponent's piece.
This capture is allowed in Calvet Anti-circe, whereas it is forbidden in Cheylan Anti-circe
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