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Bulgarian successes (Part 3)

trophy(13.10.2013) Here are selected compositions by the Bulgarian composers (GM Petko Petkov, GM Venelin Alaikov, IM Krassimir Gandev, FM Diyan Kostadinov, Nikolay Beluhov, Velko Alexandrov and Ivan Paskalev) which was awarded in last year. They are Moremover, Selfmates, Fairies and Retro. Enjoy!


We start with some masterpieces by the top Bulgarian composer GM Petko Petkov (the first two of them was part of his participation in WCCI where he become a World Champion for the 5th time!).

bgu1

1. a) 1…Rc4=wR А 2.Sf6=bS Nxc4-c1 B 3.Qxf6-h7+ Bxg6-g7#

    b) 1…Nc4=wN B 2.Sc5=bS Bxc4-b2 C 3.Qxc5-a4+ Rxb4-b5#

    c) 1…Bc4=wB  C 2.Sd6=bS Rxc4-e2 A 3.Qxd6-b5+ Nxa5-c6#

Cyclic Zilahi - realized through cyclical captures of the rear battery pieces! Cycle AB-BC-CA of black moves after play on one square - "c4", combined with cyclical creation of black batteries: B/N-R/B-N/R, sacrifices of the wSe4 (after change of its color) with the goal T&M attraction of the wQ on squares h7,a4,b5; line-closings of the wQ on the mating moves.

    2. 1…Rg2=wR 2.Rxg5-e7 Qd3=wQ! (2…Qd2=wQ?) 3.DGa8=bDG Kxf4-a5#

    1…Bh4=wB 2.Bxf2-h2 Qd2=wQ! (2…Qd3=wQ?) 3.DGa7=bDG Kxe6-a6#

Creation of two batteries DGe6/Re7 and DGf4/Bf2 after reciprocal moves and thematic sacrifices of black Rf2 and Bg5.  A strange doppel - function of the black King which plays as: 1. Forward piece of the direct battery Pb2/Pd6/DGb8, 2. Forward piece from the created new anti-batteries(with the rear pieces the DGe6 (comes to a6) and DGf4 (comes to a5) with changed colors!) on the vertical "a", 3.Mates through specifical double checks which are realized from: a) Direct black Battery Ke5/DGb8; b) Black anti-battery created on the a-vertical from the black King and an other DG! Anti dual moves: In I soution: (2...Qd2=wQ?) and in II solution: (2...Qd3=wQ?)

    3. a) 1.VAb2 LOxb2-d1 2.PAh1 Qd7+ 3.Kxd7-h3+ LOxc8-h2#

        b) 1.PAb5 LOxb5-a6 2.VAa1 Qc7+ 3.Kxc7-c3+ LOxc8-b2#

Creation of white Royal anti-batteries, change of functions, sacrifices, dynamic play and specific fairy mates.

 

bgu2

4. a) 1…Qxb7 2.Rb1 Qxb1 3.d8Q Qb8 4.Qd2+ Kxd2=

    b) 1…Bxd7 2.Ra4 Bxa4 3.c8Q Be8 4.Qg4+ Kxg4=

    c) 1…Bxc7 2.Ra5 Bxa5 3.b8Q Bxc3 4.Qg3+ Kxg3=

Cyclic change of functions of the wPs, wR sacrifices, third-pin stalemate positions.

   5. a) 1.nNAg6! nPAxe4 2.nNc4!! nPAxc4#

       b) 1.nVAb7! nNAxe4 2.nVAc8!! nNAxc8#

       c) 1.nPAa4! nVAxe4 2.nPAa8!! nVAxa8#

Original sacrifices for activization of the neutral pieces with Umnov and switchbacks, creation of batteries.

 6. Set: 1…VAc4 2.cRc1=cQ+ PAxc1#

     Sol: 1.cRh5=cQ PAc6 2.cQb5=cS+ Gxb5#

            1.cRh4=cQ Ge6 2.cQc =cS+ VAxc4#

Black third-battery play, different sacrifices of the white Chameleon in Set play form.

 

bgu3

 7. a) 1.Qf5+! Rxf5(Qa5)! 2.exf5(Rf1) Re1 3.f6+ Sxd4(Pd5)# [1…Rxf5(Qc5)?]

    b) 1.Qe5+! Bxe5(Qc5)! 2.dxe5(Bb2) Bc1 3.e6+ Sxe4(Pe5)# [1…Bxe5(Qa5)?]

Creation of white and black batteries, sacrifices and excellent using of the fairy condition.  

   8. 1.Bc4 DOe3 2.Be6 DOe7 3.Rd3 Ge5#

       1.Rxc3 DOd5 2.Rc6 DOb7 3.Gd4 Gd5#

       1.Rg3 DOd3 2.Rg6 DOh7 3.Bd3 Gf5#

Creation of white specific anti-batteries and black selfblocks.

    9. 1.Sc5+? Sxc5 2.d3+ Sxd3 3.Sd2+ Sxd2!

    1.Re5+? Rxe5 2.Sg5+ Rxg5 3.f3+ Qxf3!

    1.Ke7! (2.Bf5+ Kxd5 3.Be6+ Ke4 4.Bd5#)

1…Sc3 2.Sc5+ Sxc5 3.d3+ Sxd3 4.Sd2#

1…Qh3 2.Re5+ Rxe5 3.Sg5+ Rxg5 4.f3#

The late Bulgarian grandmaster didn’t saw the award of its logical moremover published one year ago…


bgu4

10. 1.Bc6?, 1…f4!, 1.Ba8?, 1…Ra1!

      1.Bb7! (2.Rd5+ Ke4 3.Rxd3+ Kxd3 4.Qxd2+ Bxd2#)

1…f4 2.Sg6+ Bxg6 3.Rf6+ (Rg6+?) Rd6 4.Qxf4+ Bxf4#

1…cxb3 2.Rb5+A Bxb5 3.Rg6+B (Rf6+?) Rd6 4.Qe3+ Bxe3#

(1…Be4 2.Rg6+B Rd6 3.Rb5+A Bd5 4.Qe3+ Bxe3#)

Multi connected open of black lines (the Pc4/Pf5 open lines for Bd3 > the Bd3 open line for Rd2 > the Rd2 open line for Bc1 > the Bc1 open battery line for Rb1) – a task realization probably shown for the first time! wRd6 open the battery on three different squares – d5, f6, g6, three different wQ sacrifices – on d2, e3, f4, three different mates by the black R-B battery.

  11. Set: 1…Qh1 2.Qg5+ Kd4 3.Rf4+ Ke3 4.Rxf2+ Kd4 5.Se4+ Kd3 6.Rf3+ Be3#

Tries: 1.Sa4? (zz),1…Qh1 2.Bd4+ Kd2 3.Bxf2+ Kc1 4.Qc4+ Kd1(d2) 5.Qe2+ Kc1 6.Be3+ Bxe3#, 1…Qxh3!

1.Qd6? (zz),1…Qh1 2.Sd5+ Kd2 3.Rxf2+ Kd1 4.Rd2+ Kxd2 5.Qb4+ Kd1 6.Se3+ Bxe3#, 3…gxf2 4.Qf4+ Kd1 5.Se3+ Kd2 6.Qxf2+ B(R)xf2#, but 1…Qxh3!

Sol: 1.Bc2! (zz)

1…Qh1 2.Qg5+ Kd4 3.Rf4+ Ke3 4.Rxf2+ Kd4 5.Sab5+ Kc4 6.Rf4+ Bd4#

1…Qxh3 2.Qe5+ Kd2 3.Se4+ Ke3 4.Sxg3+ Kd2 5.Se4+ Ke3 6.Qg5+ Rxg5#

White and black creation and play of diagonal-orthogonal batteries. Change of white continuations. Open of black lines with passive annihilations. White switchbacks – S-e4-g3-e4 and R-f4-f2-f4. Good construction - only 14 pieces.

 12. a) 1...a1Q! 2.a8B!! Q:a8(wK=rB) 3.rBf4 c1B! 4.b:a8R(bK=rQ)+! rQ:a8(wrB=rR)#

      b) 1…a1R! 2.a8S!! R:a8(wK=rS) 3.rSb3 c1S! 4.b:a8Q(bK=rR)+! rR:a8(wrS=rQ)#

White and black AUW, total of 6 captures and 8 different pieces on a8, corner to corner play, specific KoBul Kings and Madrasi strategy, pawns only position.

 

bgu5

13. a) 1.hnLEb1(wLE)+ Ka8! 2.LEb6+ hnNAg6(bNA)#

(3.NAh4?? – hnNA in black phase)  (3.LEh7?? closed line)

      b) 1.VA:e3(wVA) Kb7! 2.VAb6+ hnLEe4(bLE)#

(3.LEh7?? – hnLE in black phase)  (3.VAh6?? closed line)

      c) 1.hnNA:d2(wNA) Ka7! 2.NAb6+ hnVAf8(bVA)#

(3.VAh6?? – hnVA in black phase)  (3.NAh4?? closed line)

Cyclic change of functions of two groups with three pieces; creation of direct and indirect white anti-batteries; half-neutral/black chinese third battery play, three different bK moves, three different white pieces play on b6, specific fairy play.

 

The nex two Retro problems are with the judge's (McCracken) comments: 

14. The clear winner – the tandem operation of the Knights is awesome, and the play is free of other distractions. The most enjoyable problem to solve. The wB wants to go home, but he must first be relieved of shielding duty. bS volunteers for the job, but must keep his own K shielded along the way, with a little help from wS. The amusing result is that wS leads the bS up the diagonal, drops him off at f7, then returns down to b3.Solution: Retract: -1...Sa1-b3 -2.Sc4-a5+ (The only way to avoid retro-stalemate. The two Knights need to get past each other on a narrow staircase) -2…Sb3-a1 -3.Sb6-c4 Sa5-b3 -4.Sd5-b6+ Sc4-a5 -5.Sc7(f4)-d5 Sb6-c4 -6.Se6-c7(f4)+ Sd5-b6 -7.Sf4-e6 Sc7-d5 -8.Sd5-f4+ Se6-c7 (The wS now goes all the way back in order to make way for the wB) -9.Sb6-d5 Sd8-e6 -10.Sc4-b6+ Se6-d8 -11.Sa5-c4 Sd8-e6 -12.Sb3-a5+ (at least 22 successive Knight moves preceded the diagram position) c6 c5 -13.Bc4-f7 Sf7-d8+ -14.Bf1-c4 c7-c6 -15.e2-e3 e3xBd2 -16.B~-d2 and the position unlocks.

    15. The motivation of 4 of 5 shield changes is simply the fact that Black cannot remain idle – admirable! The wS is eventually going NE to unpromote. However, at the diagram, blackmust do something other than burn precious P tempi, so wS takes over the screening role. 'Foresightfully' black realizes that d5 must be reserved for a P, and a bS on c7 cannot escape without use of that square. bS was better placed on d7 and we must get him back there. This requires three more changes of role. Only now can wS go unpromote. A timely wS uncapture and fifth role change frees bS for good. Solution: Retract: -1.a7xRb8R+ Sc5-d7 -2.Sd7-e5+  Sd3-c5 -3.Bf7-g8 Sb4-d3 -4.d3-d4 Sd5-b4 -5.e2xPd3 Sc7-d5 -6.Se5-d7 Bg8-h7 -7.Sc4-e5 (Not -7.c2-c3? Bh7-g8 -8.Bg8-f7 f4-f3 -9.Sf7-e5 f5-f4 -10.Sh8-f7 d4-d3 -11.Bf7-g8 Bg8-h7 12.h7-h8S d5-d4 -13.h6-h7 h7xg6 and black is retro-stalemated) Bh7-g8 -8.Sa3-c4 Bg8-h7 9.Sb5-a3 Sd5-c7 -10.Sc7-b5+ Bh7-g8 -11.Bg8-f7 Se3-d5 -12.Bf7-g8 Sg4-e3 -13.Bg8-f7 Se5-g4 -14.Bf7-g8 Sd7-e5 -15.Sd5-c7 Bg8-h7 -16.Se3-d5 Bh7-g8 -17.Sc4-e3 Bg8-h7 -18.Se5-c4 Bh7-g8 - 19.Bg8-f7 f4-f3 -20.Sf7-e5 f5-f4 -21.Sh8-f7 d4-d3 -22.Bf7-g8 Bg8-h7 -23.h7-h8S d5-d4 -24.h6-h7 h7xSg6 -25.Se5-g6 Sc5-d7 -26.Sd7-e5+ and everything unlocks. 


bgu6

   16. 1.Qb7! (2.Sa5+ Kd4 + 3.Qd5 + Bxd5#)

1...Sxa3 2.Qb6! ~ 3.Qxc5+! Kxc5#

1...Bxa3 2.Sc8! ~ 3.Qxb5+! Kxb5 #

Black Obstriction on a3.

   17. 1...dxe2 2.Qxg2+ Qxg2#, 1...exd5 2.Rxg2+ Qxg2#

1.Qe5(d6)? (2.Rxg2+ Qxg2#), 1…f3 2.Qxh2+ Qxh2#, 1...dxe2!

1.Rxe6? (2.Qxg2+ Qxg2#), 1...f3!  

   1.Be5! (zz)

1...dxe2 2.Qxg2+ Qxg2#, 1...f3 2.Bxh2+ Qxh2#, 1...exd5 2.Rxg2+ Qxg2#

Change of functions between wQ and wR, thematic tries.

   18. 1.Kg8 2.Kf8 3.Ke8 4.Kd8 5.Kc8 6.K:b7 7.Ka6 8.Ka5 9.Kb4 10.Kc3 11.Kd2  12.Ke1 13.Kf114.K:g1 15.Kf1 16.g1S 17.S:f3 18.Kg1 19.Kh1 20.Sg1 Sf2#

Meredith, black minimal, underpromotion, model mate, bK corner to corner play.

 

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