[Retros] Champagne 2013 Batumi

[CAILLAUDM at aol.com]

Hello,
 
The tourney was only for Congress participants.
The theme was : Capture of a piece after switchback (or circuit)
 
Here are the results (below you find solutions and comments.
 
 
Section  A (ProofGames) 
9  entries by 7 composers. 4 problems were cooked.
 
Prize :
 
Igor  Vereshchagin (Russia) (version by Rustam  Ubaidulaiev)
r1R2bnr/p1pppppp/2k5/7Q/6P1/P2PP2B/P1PN1PRP/4K1q1
 
SPG  16.0 (14+13) C+
 
 
1st  HM 
Gligor  Denkovski & Ivan Denkovski (Macedonia) 
rn1k1b1r/pppp1ppp/8/3Q4/8/2K1p3/PPP1PPPP/RN3BNR 
SPG  10.0 (14+13) C+
 
 
2nd HM 
Gligor  Denkovski & Ivan Denkovski (Macedonia) 
1nbqkbnr/2p2ppp/8/3p4/8/8/1PPKPPPP/r2Q2NR 
SPG  10.0 (10+13) C+ 
Commended 
Jonathan Mestel, Allan Bell & Ian Watson (UK &  Ireland) 
1nRqkbnr/2p1pppp/8/3p4/8/8/1PPPPP1P/rNBQK1NR 
SPG  7.0 (10+13) C+ 
Section  B (any other kind of retro) 
3  entries by 3 composers. In fact, versions of the same idea. 1 was  
cooked. 
Winner 
Oleg  Pervakov, Valery Gurov & Igor Vereshchagin (Russia) 
K1bqkbR1/p1pppp2/p2P3p/8/4p3/8/8/B6B 
Win  (5+12)  

Best,
 Michel Caillaud
 
 
Solutions and comments :
 
A
Prize
1.e3 b6 2.Qh5 Ba6 3.g4 Qc8 4.Bh3 Bf1 5.Ne2 Qb7 6.Rg1 Qh1 7.Rg2 Kd8 8.Ng1  
Ba6 9.d3 Kc8 10.Bd2 Kb7 11.Ba5 bxa5 12.Nd2 a4 13.Rb1 a3 14.bxa3+ Kc6 15.Rxb8 
Bc8  16.Rxc8 Qxg1+ 
 
2  thematic pieces (Ng1  and Bc8)  perform their switchbacks without 
capturing opposite  pieces. 
A superior form of the theme shown only in this nice problem with refined  
motivations (screening on f1).
 
 
 
1st  HM 
1.d4  e5 2.Kd2 Qg5+ 3.Kc3 Qxc1 4.d5 Qg5 5.d6 Qd8 6.Qd5 Ne7 7.dxe7 e4 
8.exd8=R+ Ke7  9.Rxc8 e3 10.Rd8 Kxd8  
Twice  the theme with switchbacks on the same square d8. One of the 
thematic piece is a  Donati Ceriani-Frolkin

 

 
2nd HM 
1.Nc3  b5 2.Nd5 b4 3.Nxe7 b3 4.Nd5 bxa2 5.Nc3 d5 6.Nb1 axb1=N 7.Rxa7 Nxd2 
8.Ra1 Nxf1  9.Bd2 Nxd2 10.Kxd2 Rxa1 
Similar to 1st HM. However the Ceriani-Frolkin piece is not captured on  
its promotion square so there is no identical square. A 3rd thematic 
switchback  is present but it is of a crude nature. 
Commended 
1.a4 d5 2.a5 Bh3 3.a6 Bxg2 4.axb7 Bxf1 5.Rxa7 Bh3 6.Ra1 Bc8 7.bxc8=R  Rxa1 
Neat  rendering including a Phoenix Rook 


B
 
Winner 
1.Bg7 exd6 2.Rxf8+ (2.Bxf8? Qg5!) Ke7 3.Rxd8 Kxd8 4.Bf6+ (4.Kb8? f5!) Ke8  
5.Kb8 (5.Bxe4? d5!) a5 6.Kxc8 
8 black Pawns on diagram prove that none of the black figures is  promoted. 
White King entered behind black Pawns through g7 and black figures  must 
have move to let him reach a8. 
So, the 3 black pieces captured in the solution have performed  switchback! 
Nicely pointed. 

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