Warm welcome to dr. Klaus Wenda at Julia’s Fairies!
Original Problems, Julia’s Fairies – 2013 (II): May – August
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No.343 – Vlaicu Crișan & Klaus Wenda – Complicated strategy is demonstrated in a joint problem by two big masters of modern composition – already well-known at Julia’s Fairies Vlaicu Crișan and Austrian GM dr. Klaus Wenda! (JV)
Kangaroo (KA): Moves along Queen-lines over 2 hurdles of either color (which may or may not stand on adjacent squares) to the square immediately beyond the second hurdle. A capture may be made on arrival, but the hurdles are not affected.
Kangaroo-Lion(KL): Moves along Q-lines over 2 hurdles of either color (which may or may not stand on adjacent squares) to any square beyond the 2nd unit. A capture may be made on arrival, but the hurdle is not affected.
LEO(LE): Moves as Queen, but captures only by hopping over a hurdle to any square beyond.
PAO(PA): Moves as Rook, but captures only by hopping over a hurdle to any square beyond.
VAO(VA): Moves as Bishop, but captures only by hopping over a hurdle to any square beyond.
No.343 Vlaicu Crișan & Klaus Wenda
Romania / Austria
hs#4 b) bKd8 (5+9)
Kangaroos: c2, e4
LEOs: h5, h6
PAO d2; VAO c5
Kangaroo-Lions: c6, e1
Solutions: (click to show/hide)
a) 1.LExd2! KLh1 2.LEf3 Sg2 3.Kxd5 VAf2 4.LEde3+ Sxe3#
b) 1.LExc5! KLe8 2.LEe6 Se7 3.Kxe3 PAd6 4.LEcd5+ Sxd5#
Similar effects to various figures in the two phases:
The authors have sufficiently detailed the effects at play in the solutions, but one can add that there are 4 distinct exchanges of functions: wLEh5/wLEh6, bKLe1/bKLc6, bSd5/bSe3, bVAc5/bPAd2 with some very slight disparities (bVA blocks f2, while bPA does not block d7; wLEe6 does not guard any square, while wLEf3 guards f1).
One remarkable technical aspect of this strategic diagonal-orthogonal correspondence could be easily overlooked: ALL pieces have a role in both solutions, even bPg3. A real wonder !