[Retros] Retro solving in Messigny 2009

CAILLAUDM at aol.com CAILLAUDM at aol.com
Sat Jun 6 12:34:58 EDT 2009


Hello,

Here are the retros submitted to 19 solvers in the retro solving
competition (French Retro Solving Championship) in Messigny last week-end :

I
rsRqkb2/2pp1pp1/4p3/7p/P7/8/1PPPPPPP/1SBQKBSR
SPG 8.0 (16+11) (5 points)


II

3q2sr/kpp2ppp/s7/p1p3B1/Pb6/S2b2PS/1P2PP1P/R2Q2K1
SPG 14.0 (12+14) (5 points)


III

rsbqkbsr/ppp1p2p/6P1/3P2P1/P2Q2p1/5S1B/1P2P3/1SB1K1RR

SPG 15.5 (14+14) (5 points)



IV

rs1b4/p3p2p/1s1pp2p/7k/p7/1q5b/PPP1P2P/RSBQKBSR

SPG 19.0 (13+14) (5 points)



V

rsbqkb1r/pppp1ppp/8/6s1/8/8/PPPPPPPP/RSB1KBSR

SPG 7.5 Madrasi (15+15) (5 points)



VI

1B4Br/pp3P1p/qpP4R/1Q1Pp1P1/1S1P2p1/4P1k1/2P3P1/4K2R

Add a piece on a5 and mate in 2 (15+9+1?) (3 points per solution; number
of solutions is not indicated)



VII

RB1Sk3/RPp2pp1/K1p1p3/p1P5/4p3/1P6/P1PP1P2/2q5

Shortest path by wSd8? (12+9) (10 points)



VIII

1qk1K1SQ/pprpprpR/2p2p1p/7P/8/2P5/1P1PPPP1/1SB2B2

Minimal number of moves since first move by wTh7? (14+12) (10 points)


All problems are originals for Phenix.
VI is given here in an amended version, as the version submitted in
Messigny was unfortunately incorrect.
Some points were given for incomplete solutions in VII and VIII with
additional questions such as "which captures are determined?" in VII or "who is
to move?" in VIII...
Before the competition, I thought this could be a tough set. Anyway, the
new French Champion Thierry LE GLEUHER succeeded to solve everything in the
given time of 2 hours, losing only 1 point due to a slight mistake!

Best,
Michel
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