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Problem 776: Gennady Koziura - Selfmate
gennady.koziura(09.12.2016) Selfmate with multi play of black pieces on the same square and different mates in 3+3 thematic connected variations.
   1.Bg7?, 1…fxe5!
   1.Bh6! (2.Sc3+ Kxe5 3.Qd6+ cxd6#)
1...Sc4(Sxd1) 2.Qd3+Kxe5 3.Qe4+ Kxe4#
1...Kxe5 2.Qd6+ Ke4+ 3.Qd5+ Rxd5#
Three times bK go to e5 follow by different mates.
1...fxe5 2.exf3+ Qxf3 3.Qd4+ exd4#  
1...Bxe5 2.Qd5+ Kf4 3.Qd4+ Bxd4#                                                        
1...Sxe5 2.Qd3+ Sbxd3+ 3.exd3+ Sxd3#
Three times black blocks e5 square with creation of battery.
1...Rxe5+ 2.Qd5+ Kf5 3.Sxe3+ Bxe3#
7th variation with black piece play on e5
(total of 5 different pieces play on this square).
(1...Qe1 2.exf3+ Kxe5 3.Qd6 cxd6#)
Mates on different squares d3, d4, d5, d6, e3, e4.


+3 #1 Rajendiran Raju 2016-12-09 00:46
I think Gennady Koziura from Ukraine... !
+1 #2 Diyan Kostadinov 2016-12-09 01:09
Oh, yes of course... It is now corrected. Thank you Raju!
0 #3 Miodrag Mladenovic 2016-12-10 10:55
There is very unpleasant dual after:
1...Sd3+ 2.Qxd3+ Kxe5 3.Qe4+ Kxe4# &
1...Sd3+ 2.exd3+ Kxe5 3.Qd6+ cxd6#
This dual is downgrading value of the problem significantly.
+2 #4 Miodrag Mladenovic 2016-12-10 11:19
By the way there is a possibility to achieve flight giving key:

Now the key is 1.Sb2! All variations are same. However there is still a dual after 1...Sd3+
+1 #5 Seetharaman Kalyan 2016-12-10 11:27
beautiful! so much happending on e5. misha's version is a very good find
+2 #6 Diyan Kostadinov 2016-12-12 01:09
I received an email from Eugene Fomichev where he shows his selfmate which is with the same scheme:

In my opinion 776 is not anticipated because has more thematic variations and SOTF form, but of course - the judge will decide.

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