[Retros] Thema Danicum retros

Henrik Juel hj at imm.dtu.dk
Mon Dec 19 08:55:54 EST 2005

Here are retros and solutions from recent issues of Thema Danicum. We
welcome your original retro problems for publication in Thema Danicum.
Please send them to Henrik Juel, hj at imm.dtu.dk


Solutions to retros from Thema Danicum 114, April 2004:

9389 (Caillaud)
1... fxe4+ 2.Txe4 Se5#, not 1.Dxh3+? Kxg1 2.Dg2, because Black has the
move. -1.Lg2 Sa4 -2.c5 Sc3 -3.c4 Sb1 -4.Lf1 S=b2 -5.Lg2 b3 -6.Lf1 b4
-7.b3xSc4 Sb2 -8.Lg2 Sd1 -9.Lf1 Sf2-d1 -10.Lg2 Sh1 -11.Lf1 g2xSh1=S
-12.Sf2 b5 -13.Sd1 b6 -14.Sh1 g3 -15.Sf2-h1 Kh1 -16.Sd3 Th2 etc.

9390 (Baibikov)
-1... Lf5xSg4 -2.a5 Sh7 -3.a4 Sf8 -4.a3 Sd7 -5.a2 Se5 -6.Sh6 Sg4 -7.Sg8
c3 -8.Se7 c4 -9.Sc6 c5 -10.Sd8 c6 -11.S=d7 c7 -12.c6xDd7 De8 -13.c5 Db5
-14.c4 Db1 -15.c3 D=b2 -16.c2 a3xDb2 -17.Db5 a4 -18.De8 a5 -19.Dh8 a6
-20.D=h7 a7 -21.h6 h7xPg6 -22.g5 Tg6 -23.b5 Tf6 -24.Lg6 Dh5 -25.b4 Se5
and e.g. -26.g4 Dh4 -27.Lh5 Tg6 -28.f6 Tg5 etc.

9391 (Denkovski)
1.d4 a5 2.Dd2 a4 3.Da5 e5 4.Ld2 La3 5.Lb4 e4 6.Sc3 e3 7.000 exf2 8.Kb1
fxg1S 9.Ka1 Sxe2 10.Tb1 Sc1 11.Lc4 Sxa2 12.Lxa2 h5 13.b3 h4 14.Tb2 h3
15.Lb1 hxg2 16.h4 g1D 17.h5 Df1 18.h6 Dc4 19 bxc4.


Solutions to retros from Thema Danicum 115, July 2004:

9455 (Dittmann)
-1.Kc3xPb4 Kc7 -2.Kb3 Kb7 -3.Ka4 Ka8 -4.a7xLb8=S, 1.Lc6#.

9456 (Juel)
Kf3, Pd3,d5,d7,e4,e7,f5,g2,h3 are white, the remaining are black.

9457 (Eyjolfsson)
1.e3 Sf6 2.e4 Sd5 3.exd5 Sc6 4.dxc6 Tg8 5.cxb7 Th8 6.b8S La6 7.Sc6 Db8
8.Se5 Db5 9.Sg6 000 10.Sxh8 Kb7 11.Sg6 Kc6 12.Sxf8 Kd5 13.Se6 Ke4
14.Sxd8 De5 15.Sc6 Lb5 16.Sb8 a6.


Retros from Thema Danicum 116, October 2004:

r3k1nr/p1p2p1p/p1p2p1p/8/4PP2/3P4/PPP1K1PP/RN5R (12+12)

r . . . k . n r Eyjolfur O. Eyjolfsson
+ . + . . + . + 9519 TD 116
+ . + . . + . +
. . . . . . . .
. . . . o o . .
. . . o . . . .
o o o . K . o o C+
R N . . . . . R PG 11.0

Solution: 1.e4 Sa6 2.Lxa6 bxa6 3.d3 Lb7 4.Lh6 gxh6 5.Df3 Lg7 6.Ke2 Lf6
7.Dxf6 exf6 8.f4 De7 9.Sf3 De5 10.Sxe5 Lc6 11.Sxc6 dxc6.

3krbnr/R1pppppp/pp6/2n5/8/3N4/1PPPPPPP/1NBQKB1R (15+14)

. . . k r b n r Christoph Fieberg
R . + + + + + + 9520 TD 116
+ + . . . . . .
. . n . . . . .
. . . . . . . .
. . . N . . . .
. o o o o o o o C+
. N B Q K B . R PG 11.5

Solution: 1.a4 b6 2.a5 Lb7 3.a6 Dc8 4.axb7 Sa6 5.b8T Sc5 6.Tb7 a6 7.Ta7
Db7 8.Ta3 000 9.Tf3 Dxf3 10.Sxf3 Te8 11.Se5 Kd8 12.Sd3.

rqb1kbnK/pp1pp1RR/2p5/8/5p2/2P5/PP1PPPP1/r7 (10+13)

r q b . k b n K Eyjolfur O. Eyjolfsson
+ + . + + . R R 9521 TD 116
. . + . . . . .
. . . . . . . .
. . . . . + . .
. . o . . . . .
o o . o o o o . C+
r . . . . . . . PG 15.5

Solution: 1.c3 c6 2.Da4 Dc7 3.Kd1 Dxh3 4.Df4 f5 5.Dxb8 Dxb8 6.Txh7 f4
7.Txg7 Th1 8.Kc2 Txg1 9.Kd3 Txf1 10.Ke4 Txc1 11.Kf5 Txb1 12.Kg6 Tc1
13.Kh7 Tc2 14.Th1 Tc1 15.Kh8 Ta1 16.Thh7.


Retros from Thema Danicum 117, January 2005:

k7/pppqpp1p/3p4/6R1/P5b1/bPN5/1BPrBPPP/QKN4R (14+12)

k . . . . . . . Bjørn Enemark
+ + + q + + . + dedicated to Henrik Juel, 60
. . . + . . . . 9601 TD 117
. . . . . . R .
o . . . . . b .
b o N . . . . .
. B o r B o o o C+
Q K N . . . . R PG 17.5

Solution: 1.a4 d6 2.Ta3 Sd7 3.Tg3 Sdf6 4.Txg7 Lg4 5.Txg8 Dd7 6.Txh8 Sg8
7.Txg8 000 8.Tg5 Lg7 9.b3 Lb2 10.Sc3 La3 11.Lb2 Tg8 12.Da1 Tg6 13.Kd1
Te6 14.Kc1 Txe2 15.Kb1 Txd2 16.Sge2 Kb8 17.Sc1 Ka8 18.Le2.

r3k1nr/pppn1pRp/3p1P2/5P2/5pb1/5p2/PPP2PBP/RN1Q1K2 (13+14)

r . . . k . n r C.C. Frankiss
+ + + n . + R + 9602 TD 117
. . . + . o . .
. . . . . o . .
. . . . . + b .
. . . . . + . .
o o o . . o B o C+
R N . Q . K . . PG 12.0

Solution: 1.g4 e5 2.g5 Df6 3.gxf6 g5 4.Sf3 g4 5.Tg1 gxf3 6.Tg7 Lb4 7.Lg2
Lxd2+ 8.Kf1 Lf4 9.e3 d6 10.exf4 Lg4 11.f5 Sd7 12.Lf4 exf4.

1n1qkb2/Npp1p1pn/1p1p2p1/6p1/3P2P1/6P1/PPP2PP1/RN1QK3 (13+13)

. n . q k b . . C.C. Frankiss
N + + . + . + n 9603 TD 117
. + . + . . + .
. . . . . . + .
. . . o . . o .
. . . . . . o .
o o o . . o o . C+
R N . Q K . . . PG 12.5

Solution: 1.d4 h6 2.Lg5 hxg5 3.Sf3 Th3 4.Se5 Tg3 5.hxg3 Sf6 6.Th6 Sh7
7.Tb6 axb6 8.Sc6 Ta3 9.Sa7 Tf3 10.exf3 d6 11.Ld3 Lg4 12.Lg6 fxg6
13.fxg4.

5k2/1p2pPp1/4pp2/K1p5/3p4/2P2P2/2PP1PPP/8 (9+8)

. . . . . k . . Henrik Juel
. + . . + o + . 9604 TD 117
. . . . + + . .
K . + . . . . .
. . . + . . . .
. . o . . o . .
. . o o . o o o
. . . . . . . . Black pawns' first moves?

Solution: Pb7,e7,g7 never moved; the other black pawns' first moves
were: a7xSb6, c7-c6, d7xSe6, f7-f6, h7xTg7. -1.Ka4 b6xLc5 -2.La3 d5
-3.Lc1 c6xTd5 -4.b2xDTSc3 etc.


Retros from Thema Danicum 118, April 2005:

Nr1B1b2/rBKpp1p1/Qp4p1/RR5p/PqkP4/npP5/2PP3P/1N6 (14+13)

N r . B . b . . Tom Volet
r B K + + . + . 9677 TD 118
Q + . . . . + .
R R . . . . . +
o q k o . . . .
n + o . . . . .
. . o o . . . o
. N . . . . . . Release the position

Solution: -1.e3xSd4 Sf5 -2.e2 Sd6 -3.Le4 Sb7 -4.Lc6 Dc5 -5.Le4 Dd4
-6.Lf5 Dd5 -7.Le6 b4 -8.Lg8 De4 -9.f7xLg8=L Dd4 -10.f6 Ld5 -11.f5 Lc6
-12.f4 Dc5 -13.f3 Kd5 -14.f2 Sc4 etc.

BqQrrb2/3Rppp1/K1k2P2/nP6/2P3PP/1pRPN3/2PpP3/8 (14+11)

B q Q r r b . . Dmitrij Baibikov
. . . R + + + . 9678 TD 118
K . k . . o . .
n o . . . . . .
. . o . . . o o
. + R o N . . .
. . o + o . . .
. . . . . . . . Add men and release position

Solution: Add black Tb7, Lc7, Pd5. -1.b4 d6 -2.Sd5 Lb6 -3.Sc7 Lg1 -4.h3
L=g2 -5.h2 h3xSg2 -6.Sf4 h4 -7.fSe6 h5 -8.Sc5 Tb5 -9.Sb7 Tf5 -10.g3 Tf1
-11.f5 Ta1 -12.f4 T=a2 -13.f3 a3 -14.f2 a4 -15.a3xSb4 Sd5 -16.a2 b4 and
e.g. -17.Tb3 b5 -18.Tb1 Sb3 -19.Ka5 Sd4 -20.Kb4 Sf6 -21.Th1 Kb6 etc.

8/2Pp4/3N4/1PP5/1PpB4/2PR4/P1pN1PP1/Qnk1K2R (15+5)

. . . . . . . . Valery Liskovets
. . o + . . . . 9679 TD 118
. . . N . . . .
. o o . . . . .
. o + B . . . .
. . o R . . . .
o . + N . o o .
Q n k . K . . R H#1*, 2 solutions, AP

Solution: 1... Ke2#, not 1... 00?; 1.cxd3 Sb3#, 1.cxb3ep 00#.


Retros from Thema Danicum 119, July 2005:

7k/n1P4b/4n2r/8/6Kp/B7/1p3p2/5Bb1 (4+9)

. . . . . . . k Wolfgang Dittmann
n . o . . . . b 9765 TD 119
. . . . n . . r
. . . . . . . .
. . . . . . K +
B . . . . . . .
. + . . . + . . Anticirce
. . . . . B b . Proca -4.5, #1

Solution: -1.Ld5xTg2 Th2 -2.Kh3 Tg2 -3.Kh2 Sf8 -4.Kg3 h5 -5.Le7, 1.Lf6#.

rnbq1NBR/pppp1kp1/4p1n1/5p1p/7P/5PP1/PPPPPr1b/RNBQK3 (16+16)

r n b q . N B R Christoph Fieberg
+ + + + . k + . 9766 TD 119
. . . . + . n .
. . . . . + . +
. . . . . . . o
. . . . . o o .
o o o o o r . b C+
R N B Q K . . . PG 15.5

Solution: 1.h4 h5 2.Th3 Th6 3.Tf3 Tg6 4.Tf6 Tg3 5.f3 Th3 6.g3 Th2 7.Lh3
e6 8.Lf5 Lc5 9.Sh3 Lg1 10.Th6 Tf2 11.Th8 Lh2 12.Lh7 f5 13.Sf4 Kf7 14.Sg6
Se7 15.Sf8 Sg6 16.Lg8+.

1R1n2n1/3ppk1p/2p1rp2/p2p1r2/3b4/2qP4/PP1PPP2/RNB1KBN1 (13+14)

. R . n . . n . Kostas Prentos & Andrej Frolkin
. . . + + k . + 9767 TD 119
. . + . r + . .
+ . . + . r . .
. . . b . . . .
. . q o . . . .
o o . o o o . . C+
R N B . K B N . PG 21.5

Solution: 1.h4 a5 2.h5 Ta6 3.h6 Te6 4.hxg7 Sh6 5.g8D Sc6 6.Dg3 Tg8 7.Dd6
Tg5 8.g4 Tf5 9.g5 cxd6 10.g6 Dc7 11.g7 Sd8 12.g8D Dc3 13.Dg2 Lg7 14.Dc6
bxc6 15.Th4 La6 16.Tb4 Ld3 17.cxd3 Ld4 18.Db3 f6 19.Dd5 Kf7 20.Dg2 d5
21.Dg8+ Sxg8 22.Tb8.


Retros from Thema Danicum 120, October 2005:

l7/8/2kP4/5q2/8/4K3/2Q5/7B (4+3)

l . . . . . . . Henrik Juel
. . . . . . . . 9848 TD 120
. . k o . . . .
. . . . . q . .
. . . . . . . .
. . . . K . . .
. . Q . . . . . Black Lion on a8
. . . . . . . B Last 2.5 moves?

r1b1kb1r/pp1pp1pp/2p2p2/3n4/3P1P2/1P6/P1P1P1PP/RNBQKBNR (16+14)

r . b . k b . r Eyjolfur O. Eyjolfsson
+ + . + + . + + 9849 TD 120
. . + . . + . .
. . . n . . . .
. . . o . o . .
. o . . . . . .
o . o . o . o o C+
R N B Q K B N R PG in exactly 7.0

rnbq2nK/ppp2prN/5Bp1/3ppQ2/3P3b/5P2/PP1RP1PP/k4BNR (15+15)

r n b q . . n K Eyjolfur O. Eyjolfsson
+ + + . . + r N 9850 TD 120
. . . . . B + .
. . . + + Q . .
. . . o . . . b
. . . . . o . .
o o . R o . o o
k . . . . B N R PG 18.5


Retros from Thema Danicum 121, January 2006:

r6n/ppp5/2np1p2/2p3kp/6p1/P2PPP1r/1bP3PP/RNqQ1bNK (12+16)

r . . . . . . n Gianni Donati
+ + + . . . . . 9926 TD 121
. . n + . + . .
. . + . . . k +
. . . . . . + .
o . . o o o . r
. b o . . . o o
R N q Q . b N K PG 24.0

3qRN1k/pppn1n2/4K1pp/4pp2/8/8/8/8 (3+11)

. . . q R N . k Bernd Gräfrath
+ + + n . n . . 9927 TD 121
. . . . K . + +
. . . . + + . .
. . . . . . . .
. . . . . . . .
. . . . . . . .
. . . . . . . . Proca -1.5, #1

nn6/6N1/8/8/3r2rk/4K3/8/7b (2+6)

n n . . . . . . Klaus Wenda
. . . . . . N . 9928 TD 121
. . . . . . . .
. . . . . . . .
. . . r . . r k
. . . . K . . .
. . . . . . . . Anticirce (either type)
. . . . . . . b Proca -3.5, #1


Henrik
--
Henrik Juel. Informatics and Mathematical Modelling, Building 321,
Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark.
http://www2.imm.dtu.dk/~hj Phone +45 4525 3391 Fax +45 4528 1344


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