[Retros] Messigny retro composing contest

[Thierry LE GLEUHER]

Dear retro friendsThere is the award of the Messigny 2009 retro composing contest.
Special thanks to Andreï FROLKN, Kostas PRENTOS, Jorge J. LOIS and Roberto OSORIO for their participation.


The aim of this new idea was to maximize the number of the
thematic retro-moves. So my judgement has been made by classifying the
problems per number of retro moves and in the event of equality by holding
account of the number of moves of the proof game.

An other criteria like ratio (n/m as explained after) can be
used. This ratio is written for each problem for information.

Now you can try to improve
these different tasks. Your problems will be welcome for Phenix.





Sincerely
Thierry    


1st Place -
Messigny 2009

Michel
CAILLAUD

rn2kqnr/p1pp1ppp/2p4P/2P5/8/3n4/1PPPPPP1/2BQKB2

SPG in 16.0 moves (12+14) C+

last 12 single moves?

 

1.Nf3 e5 2.Nd4 Bc5 3.Nc6 bxc6 4.Nc3 Ba6
5.Ne4 Bc4 6.Ng3 Bb3 7.axb3 Qe7 8.Ra4 Qf8 9.Rf4 exf4 10.h3 fxg3 11.Rh2 gxh2
12.h4 h1=N 13.h5 Ng3 14.h6 Nh5 15.b4 Nf4 16.bxc5 Nd3+ (C+ Natch 2.4 in 0.88")

 

last 12 single moves forced !

 

n=Thematic single moves

m=Proof game single moves

Ratio n/m=12/32=0.375

 

2nd Place - Messigny 2009

Andreï FROLKIN

rn5r/pppknppp/P1n5/6p1/2bq4/8/1PPPPPP1/2BQKB2

SPG in 17.0 moves (11+15) C+

last 12 single moves?

 

1.Nc3 d5 2.Ne4 Be6 3.Nf6+ exf6 4.Nf3 Bd6
5.Ne5 Ne7 6.Nc4 Bg3 7.hxg3 dxc4 8.Rh5 Qd4 9.Rb5 Kd7 10.Rb3 cxb3 11.a3 Bc4
12.Ra2 bxa2 13.a4 a1=N 14.a5 Nb3 15.a6 Na5 16.g4 Nac6 17.g5 fxg5 (C+ Natch 2.4
in 1.04")

 

last 12 single moves forced !

 

n/m=12/34=0.353

 

3th Place - Messigny 2009

Andreï FROLKIN

1n2k1nr/Ppqppp1p/5p2/b7/4r2P/5b2/1PPPPPP1/2BQKB2

SPG in 16.0 moves (12+14) C+

last 8 single moves?

 

1.Nf3 a5 2.Nd4 a4 3.Nb3 axb3 4.a3 Ra4
5.Ra2 bxa2 6.h4 axb1=B 7.Rh3 Ba2 8.Rc3 Bd5 9.Rxc7 Bf3 10.Rxc8 Re4 11.Rc6 Qc7
12.Rf6 gxf6 13.a4 Bh6 14.a5 Be3 15.a6 Bb6 16.a7 Ba5 (C+ Natch 2.4 in 9.62")

 

last 8 single moves forced !

 

n/m=8/32=0.250

 

4th Place - Messigny 2009

Michel CAILLAUD

rnb2bnr/pppqppp1/2p5/8/4Pk2/6pK/PPPP1P1P/RNBQ2NR

SPG in 9.0 moves (14+16) C+

last 4 single moves?

 

1.e3 h5 2.Bb5 h4 3.Bc6 dxc6 4.Ke2 Kd7
5.Kf3 Ke6 6.Kg4 Qd7 7.Kh3 Kf5 8.e4+ Kf4+ 9.g4 hxg3ep++ (C+ Natch 2.4 en
0,33")

 

last 4 single moves forced !

 

n/m=4/18=0.222

 

5th Place
- Messigny 2009

Jorge J.
LOIS & Roberto OSORIO

5Qnr/p1pppp1p/1qp2p1P/1r5b/6nk/3P4/PP2NPPR/R1N2BK1

SPG in 22.5 moves (13+15)

last 4 single moves?

 

1.c4 Nc6
2.c5 Ne5 3.c6 bxc6 4.h4 Ba6 5.h5 Bxe2 6.d3 Rb8 7.Bg5 Rb5 8.Bf6 gxf6 9.Nd2 Bh6
10.Nb3 Be3 11.Nc1 Bc5 12.Kd2 Bd6 13.Ke3 Kf8 14.Kf4 Kg7 15.Kg3 Kh6 16.Kh2 Kg5
17.Qd2+ Kh4 18.Qh6 Qb8 19.Qf8 Qb6 20.h6 Bh5 21.Nge2 Ng4++ 22.Kg1+ Bh2+ 23.Rxh2+
(partial C+ 21,5 coups Natch 2.4 in 15.66")

 

last 4 single moves forced !

 

n/m=4/45=0.089

 

6th Place -
Messigny 2009

Éric
PICHOURON & Michel CAILLAUD

r1bq1bnr/ppp1p2p/5pp1/2kp2RQ/6K1/3P1PP1/PPP3P1/RNB2BN1

SPG in 11.0 moves (15+15) C+

last 3 single moves?

 

1.d3 Nc6 2.Kd2 Nd4 3.Ke3 Nxe2 4.Ke4 Ng3+
5.hxg3 f6 6.Rh5 Kf7 7.Rg5 Ke6 8.Qh5 Kd6 9.Kf5 Kc5 10.f3 g6+ 11.Kg4+ d5+ (C+
Natch 2.4 in 1'32")

 

last 3 single moves forced !

 

n/m=3/22=0.136

 

7th Place - Messigny 2009

Pascal WASSONG

rnbqkb1r/pppp2p1/4p1n1/7B/3QP2K/5P1p/PPPPN1pP/RNB3R1

SPG in 12.0 moves (15+16) C+

last 3 single moves?

 

1.e4 f5 2.Be2 f4 3.Bg4 f3 4.Ne2 fxg2 5.f3
h5 6.Kf2 h4 7.Qg1 h3 8.Kg3 e6 9.Qd4 Ne7 10.Rg1 Rg8 11.Kh4 Rh8+ 12.Bh5+ Ng6++ (C+
Natch 2.4 in 1.10")

 

last 3 single moves forced !

 

n/m=3/24=0.125

 

8th Place
- Messigny 2009

Kostas
PRENTOS & Andreï FROLKIN

rnr5/p1P3pp/2p1p3/5b2/qb1p1kPN/3K4/PPPn1P2/R1BQ1BNR

SPG in 18.0 moves (14+14) C+

last 3 single moves?

 

1.d4 Nf6 2.d5 Ne4 3.d6 Nc3 4.dxc7 d5 5.e4
Bf5 6.e5 Kd7 7.e6+ Kd6 8.exf7 e6 9.h4 Qxh4 10.Nd2 Qa4 11.Ndf3 d4 12.Nh4 Ke5
13.Kd2 Bb4 14.f8=Q Kf4 15.Qc5 Rc8 16.Qc6 bxc6 17.g4 Ne4++ 18.Kd3+ Nd2+ (C+
Natch 2.4 in 1'43")

 

last 3 single moves forced !

 

n/m=3/36=0.083

 

9th Place
- Messigny 2009

Étienne
DUPUIS

2kr2K1/pppq2p1/1n2pp2/3p1b1p/5r2/P4P2/P1PPPBPP/RN2QBNR

SPG in 13.0 moves (16+14) C+

last single move?

1.f3 h5 2.Kf2 Rh6 3.Kg3 Rf6 4.Kh4 Rf4+
5.Kg5 f6+ 6.Kg6 d5 7.Kh7 Bf5+ 8.Kxg8 e6 9.Qe1 Ba3 10.bxa3 Nd7 11.Bb2 Nb6 12.Bd4
Qd7 13.Bf2 OOO# (C+ Natch 2.4 in 0.27")

 

last single move forced !

 

n/m=1/26=0,038







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