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Problem 170: Sven-Hendrik Lossin - Selfmate

sven(17.04.2013) Very nice selfmate with echo play - welcome to Sven-Hendrik Lossin from Germany!







1.Qc6! (2.Sd6+ Ke5 3.Sf7+ Ke4 4.Qc4+ Sd4#

2…Bxd6 3.Qc4+ Ke5 4.Qd4+ Sxd4#)

   1…Ba7 2.Sc5+ Kd4 3.Sb3+ Ke4 4.Qe6+ Se5#

2…Bxc5 3.Qe6+ Kd4 4.Qe5+ Sxe5#

2x clearance, 2x distant block, echo (Author) 



+1 #1 seetharaman 2013-04-17 22:02
Interesting clearances echoed, but pity it is so symmetric.
+1 #2 Sven-Hendrik Lossin 2013-04-23 09:28
I have had a version that was less symmetric but was clearly worse. I think that symmetry is not that bad with s# as it sometimes is with h#. In this case the wKg4 disturbs the symmetry so that it wasn't that easy to show the distant block echo because the bK does not guard f5 when standing on d4. In that variation I managed to give the bRf1 this function so that it is not only there to block the bBe2.
+2 #3 Nikola Predrag 2013-04-24 00:58
A good evaluation of symmetry probably grows with the experience with such positions. Due to my modest experience, I see nothing repelling in this kind of symmetry, actually I like it. It is not a bare symmetry of the chessboard where one piece can play left or right. The mechanism works fine in a chain of reciprocities of 2 wS's, wQ/bB and bK/bS. Echo and symmetry are by no means automatically a drawback. I hope that the mechanism is original.

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