Here are the top three winners on each section of "Petko Petkov - 70JT" 2012 organized by Strate Gems in occasion of the 70th anniversary of GM Petko Petkov who is the World ranking number one and the best Bulgarian chess composer.

Section Selfmates 

46 problems by 26 authors from 11 countries

   1) Set: 1…Kg1 2.Sd1+ Kh2 3.Se3 Kg1 4.Qh3 Kf2 5.Qg2+ Ke1 6.Bb2 d4 7.Qf1+ Kd2 8.Bc1 Kc3

9.Sd5+ Kb3 10.Qe2 d3 11.Qc2+ dxc2#

     Play: 1.Kc1 Kg1 2.Kd2+ Kh2 3.Qf4+ Kg2 4.Qh4 Kf3 5.Rf1 Kg2 6.Ke1 Kf3 7.Se4+ Kg2 8.Rg1+ Kf3

9.Kf1 dxe4 10.Bf2 e3 11.be1 e2#

   2) 1.Qa7! (2.Sc7+ Kxd6 3.Qa3+ Sxa3#)

 1...Rxf4 2.Bd5+ Ke5 (2.Sxd4+? Rxd4+ 3.f4+?) 3.Sf3+ Rxf3# (3.Qxd4+? Rxd4+ 4.f4+?)

 1...Sxf4 2.Sxd4+ Ke5 (2.Bd5+? Sxf4+ 3.Rxg5) 3.Sg6+ Sxg6# (3.Qc5+? Sd5+ 4.Rxg5?)

   3) 1.c8S! (2.Scb4+ Kb3 3.Rc3+ Ka4 4.Sxc5+ Ka5 5.Sb7+ Ka4 6.Qd1+ Rxd1#; 2…Rxc1 3.Sxc5+ Rxf1#)

 1...axb2 2.Sa3+ Kxd4 3.Rc4+ dxc4 4.Sb5+ Kd5 5.Sf4+ Ke5 6.Qe1+ Rxe1#

 1...cxd4 2.Se5+ Kc5 3.Qc4+ dxc4 4.Sd7+ Kd5 5.Sb4+ Ke6 6.Re1+ Rxe1#

   4)  PET:  1…Se~ 2.Sf4+ exf4 3.Be4+ Qxe4#, 1…Sf5!? 2.Se7+ Sxe7 3.Be4+ Qxe4# 

     1.Sd8! (2.Qc6+ Bxc6 3.Rb5+ Bxb5#)

1…Bc6 2.Qxd4+ exd4 3.Rb5+ Bxb5#, 1…Sc4 2.Sf4+ exf4 3.Be4+ Qxe4#

     KOV: 1.b7? (zz) c6 2.Qb5+ cxb5#, 1…c2!; 1.Rc2! (zz), 1…cxb6 2.Qc7 b5#, 1…c6 2.Qb5+ cxb5# 

Section Fairy problems

69 problems by 31 authors from 18 countries

А: Help-Self problems without fairy pieces

5) 1.Se7 Kd7 2.Sc6 Sd6 3.Kc5 Sb5 4.Kb6 Sa7 5.Kb7 Kc8+ 6.Ka8 Sb5 7.Sa7 Sxa7= = (7…Sc7?)

     1.Ke4 Ke6 2.Sf6 Ke7 3.Kf5 Sg5 4.Kg6 Sh7 5.Kg7 Kf8+ 6.Kh8 Sg5 7.Sh7 Sxh7= = (7…Sf7?)

6) 1.Kc1 Rc8 2.h8B c4 3.Bf6 c3 4.Bg5! (4.Be7?) c2 5.Kxc2 [wKc2-e1]+ Rc1#

    1.Ka1 Ra8 2.h8R a4 3.Rg8 a3 4.Rg4! (4.Rh5?) a2 5.Kxa2 [wKa2-e1]+ Ra1#

7) 1.exd4[A] Bc7 [Rf6] 2.Sf7 Ba5 3.bxa5[B] (zz) Rxf7 [Ba6]#

    1.bxa5[A] Rd7 [Ba8] 2.Sb7 Rd4 3.exd4[A] (zz) Bxb7 [Re3]#

B: Help-Self problems with fairy pieces 

8) 1...LEd8 2.PAxe6-c4 (bBc1) Rxc4-c3 (wPAc5) 3.PAxc1-h6 (bBc7)+ Kd7#

   1...LEb8 2.VAxc5-f5 (bRh3) Bxf5-g4 (wVAe6) 3.VAxh3-a3 (bRd7)+ Kc7#

9) a) 1…h1LE! 2.NAe5 NAb2 3.LEc4+ g1NA#

(1…h1PA? 2.NAe5 NAb2 3.LEc4+ g1NA+ 4.PAh8!, or 2.VAc5 ~ 3.PAb4+ Ka2!)

    b) 1…h1PA! 2.VAc5 NAa2 3.PAb4+ g1VA#

(1…h1LE? 2.VAc5 NAa2 3.PAb4+ g1VA+ 3.LEh7!, or 2.NAe5 ~ 3.LEc4+ Kb2!)

10) 1.cBxf5=cR cSd2=cB 2.Kg5 cBc1=cR 3.cRf6=cQ cRd1=cQ 4.cSf3=cB+ cQxf3=cS#

      1.cRg5=cQ cSg2=cB 2.Kxf5 cBh3=cR 3.cQf6=cS cRxh6=cQ 4.cBh4=cR+ cQxh4=cS#