[Retros] Retro solving in Messigny 2011

[CAILLAUDM at aol.com]

Hello,
 
Below are the problems submitted this year.
 
They belong to the Phenix 2011 tourney for original retros.
There were more PGs than classical retros, but more points for solving a  
classical retro than for a PG...
There was some incident as I misprinted number of moves of 6 (7.0 instead  
of 7.5) but this was soon detected (by Pascal Wassong) and corrected.
 
The 8 problems were to be solved in 2 hours.
Can you do better than the winner, Thierry Le Gleuher, who scored the  
maximum (48 points; also the only one to do so) in 1h13'?  (Thierry says he  was 
even quicker than that, but he took time to re-read carefully his redaction 
 before handing back his copy!).
 
Best,
 Michel
 
1 :
rnbqkb1r/ppBppppp/8/3n4/3P4/8/PPP1PPPP/RN1QKBNR
 
PG a) 2.5 b) 5.0  (16+15) (2+3 points)

 
2 :
rn1qk1nr/1pp2ppp/8/3pp3/p7/1b4PN/PPPP1PP1/RNB1K3
SPG 10.0 (12+15) (5 points)
 
3 :
r3k1nr/ppp1p1pp/2p5/4n3/8/8/PPPNPP1P/R1BQK1NR
 
SPG 10.0 (13+12) (5 points)

 
4 :
rnbq2nr/pp1p3p/4pPPk/8/2P5/P1NB3P/P3QR1P/RNB2K2
 
SPG 15.5 (15+12) (5 points)

 
5 :
1n1q1rk1/1pp2pp1/1pn2p2/1Q1p1b1p/P7/1rP5/K1PPP1PP/RN4NR
 
SPG 16.5 (13+15) (5 points)
 
6 :
r1bqkbn1/pp1pppp1/6p1/8/2p5/8/PPPPPPPP/R1BQKBNR
 
SPG 7.5  Duellists  (15+14) (5 points)
Duellists (Echecs Duel, DuellantenSchach,...) : each side choses a duellist 
 and must play with this piece until he can no longer (capture, pining, 
need to  parry a check,...); then he can choose a new duellist.

 
7 :
rb5n/kPpQpp2/pN1Bp1pp/KPR1R3/PNPP4/8/4PP2/8
Which captures are determined? (14+11) (9 points)

 
8 :
q2RRbr1/K1ppp1p1/p1p4r/8/8/3kP1P1/3P1bPP/4B1bN
a) Add a piece on h8 then
b) What were white promotion moves?
c) Which captures are determined?
(10+13) (3+3+3 points)
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