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Problem 643: Gabor Tar - Fairy (Anti Circe, Nightrider)
gabor.tar(11.12.2015) Nice fairy problem with Anti Circe strategy by Gabor Tar.
   a) 1.Qxb1(Qb1-d1) Bf4! (Qa7?) 2.Qd8 Qa7 3.Sg3+ Rb1#
wQ is pinned by Qa7 and Bf8 is pinned by Bf4
   b) 1.Sxc3(Sc3-g1) Ba5! (Re8?) 2.Sh3 Re8+ 3.Qh8+ Qd1#
wQ is pinned by Re8 and Bf8 is pinned by Ba5
Anti-Circe Calvet (the default type): After a capture the capturing piece (Ks included) must immediately be removed to its game array square (necessarily vacant, else the capture is illegal). R, B & S go to the square of the same colour as the capture; Ps stay on the file of capture; fairy pieces go to the promotion square of the file of capture. 
Nightrider:a rider moving along any straight line of S moves.


0 #1 Seetharaman Kalyan 2015-12-11 11:28
Beautiful Anti-circe effects and nice double pin mates! Pity about the underused Nightrider.
0 #2 Eric Huber 2015-12-11 19:54
Thanks for the kind dedication.

This problem is the result of hard work by the composer who efficiently improved his entry for the 2015 Tzuica Tourney. The specific AntiCirce pins are a very nice feature.

The Nightrider seems underused, but it has a role in both twins: it is captured in a) and it guards e7 in b).

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