Tuesday, December 22, 2009

Christmas Trees

There are problems having symmetric placing of the pieces. We have presented many of them (see the problems 7, 155, 162, 163, 164, 165, 166, 167, 245, 246, 247, 250, 309).

The special case of symmetry around a vertical axis (same direction with the columns) and pattern reminding a fir-tree, has been used by composers to send wishes during Christmas time. These problems are known as Christmas trees (Xmas trees). Maybe the most popular problem, from those published here, is Problem-155, which is a tree from the side of the Black. (See also here).

Today we present an original two-mover by Nikos Pergialis, known composer of rebetiko songs and also chess problems!. It shows a small Christmas tree and a star (the white Queen) sheding light from above. As he himself has described it "Simple and elegant like a rebetiko song".

(Problem 392)
Nikos Pergialis,
original, 2009
Mate in 2 moves.
#2 (4 + 4)

Tries : [1.Qb6? Kxc3!], [1.Qf6? / Qh8? Kxe3!]

Key : 1.Qd6! (zugzwang).
1...Kxc3 / Kxe3 2.Qa3# / Qg3# (two echo model mates).
1...d4 2.Qxd4#

Wishes to all, to live happily these holidays ... and all the other days!

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