[Retros] Die Schwalbe Heft 220, August 2006
Joost de Heer
joost at sanguis.xs4all.nl
Sat Oct 28 15:02:40 EDT 2006
Send your solutions (and originals) to:
Gùnter Lauinger
Gradmannstr. 35
88213 Ravensburg
g.lauinger at t-online.de
13127 - Gerald Irsigler
4k3/3p1p1S/3P1P1p/B2PpKpP/PSB1Pp2/8/2P4P/8 (13+7)
+---a---b---c---d---e---f---g---h---+
| |
8 . . . . -K . . . 8
| |
7 . . . -P . -P . S 7
| |
6 . . . P . P . -P 6
| |
5 B . . P -P K -P P 5
| |
4 P S B . P -P . . 4
| |
3 . . . . . . . . 3
| |
2 . . P . . . . P 2
| |
1 . . . . . . . . 1
| |
+---a---b---c---d---e---f---g---h---+
Mate in how many moves?
13128 - Alexander Yarosh
3bb3/2pprPps/4pBp1/4p1K1/8/3P1P1k/4PpRr/5BRq (9+14)
+---a---b---c---d---e---f---g---h---+
| |
8 . . . -B -B . . . 8
| |
7 . . -P -P -R P -P -S 7
| |
6 . . . . -P B -P . 6
| |
5 . . . . -P . K . 5
| |
4 . . . . . . . . 4
| |
3 . . . P . P . -K 3
| |
2 . . . . P -P R -R 2
| |
1 . . . . . B R -Q 1
| |
+---a---b---c---d---e---f---g---h---+
Add a black pawn and release the position!
13129 - Alexander Yarosh
7s/1p1Kpp2/p5p1/pB2B3/1PPp1P2/Q3PRP1/3Prqp1/2S1bkr1 (12+14)
+---a---b---c---d---e---f---g---h---+
| |
8 . . . . . . . -S 8
| |
7 . -P . K -P -P . . 7
| |
6 -P . . . . . -P . 6
| |
5 -P B . . B . . . 5
| |
4 . P P -P . P . . 4
| |
3 Q . . . P R P . 3
| |
2 . . . P -R -Q -P . 2
| |
1 . . S . -B -K -R . 1
| |
+---a---b---c---d---e---f---g---h---+
Add a white rook and a piece on h1, then h#1
13130 - Michel Caillaud
Dedicated to Werner Keym
2S4b/3R4/B7/3P4/1PP1P3/Br1KRP1P/Pq1sQrP1/1Sk2b2 (16+7)
+---a---b---c---d---e---f---g---h---+
| |
8 . . S . . . . -B 8
| |
7 . . . R . . . . 7
| |
6 B . . . . . . . 6
| |
5 . . . P . . . . 5
| |
4 . P P . P . . . 4
| |
3 B -R . K R P . P 3
| |
2 P -Q . -S Q -R P . 2
| |
1 . S -K . . -B . . 1
| |
+---a---b---c---d---e---f---g---h---+
Release the position!
13131 - Andrey Frolkin
Dedicated to Werner Keym
SBRqrbBS/1ppppp2/1p4Pk/8/7K/6P1/1RP5/1RB5 (12+10)
+---a---b---c---d---e---f---g---h---+
| |
8 S B R -Q -R -B B S 8
| |
7 . -P -P -P -P -P . . 7
| |
6 . -P . . . . P -K 6
| |
5 . . . . . . . . 5
| |
4 . . . . . . . K 4
| |
3 . . . . . . P . 3
| |
2 . R P . . . . . 2
| |
1 . R B . . . . . 1
| |
+---a---b---c---d---e---f---g---h---+
Did promotions, castling or en passant captures occur? (3 wR, 3wB)
(The German text is 'Gab es Umwandlungen, Rochaden oder E.p.-Schlàge?'.
Mathematically that implies you have to prove only one of the three
questions, but intended is of course to show the minimal number of
promotions, en passant captures and castlings)
13132 - Roberto Osorio, Jorge Lois
Dedicated to Mario Richter
1Srqkb1r/pppp1pPs/4Pp2/8/8/3P1K2/1Pp1P1P1/8 (8+13)
+---a---b---c---d---e---f---g---h---+
| |
8 . S -R -Q -K -B . -R 8
| |
7 -P -P -P -P . -P P -S 7
| |
6 . . . . P -P . . 6
| |
5 . . . . . . . . 5
| |
4 . . . . . . . . 4
| |
3 . . . P . K . . 3
| |
2 . P -P . P . P . 2
| |
1 . . . . . . . . 1
| |
+---a---b---c---d---e---f---g---h---+
Retract 33 halfmoves for #1 (Proca rectractor)
(Is '#1 17 moves ago' a clear enough translation of '#1 vor 17 Zùgen?',
or is the proper English form the one I used above?)
13133 - Andrey Frolkin, Kostas Prentos
rsq2rk1/ppp1p3/4b2p/7p/1S2P3/1KpP4/P2Q1PPP/3R2SR (12+13)
+---a---b---c---d---e---f---g---h---+
| |
8 -R -S -Q . . -R -K . 8
| |
7 -P -P -P . -P . . . 7
| |
6 . . . . -B . . -P 6
| |
5 . . . . . . . -P 5
| |
4 . S . . P . . . 4
| |
3 . K -P P . . . . 3
| |
2 P . . Q . P P P 2
| |
1 . . . R . . S R 1
| |
+---a---b---c---d---e---f---g---h---+
SPG 13.0. Which intermediate positions are cooked?
13134 - Werner Keym
Construct a position with both kings (on different coloured squares),
one officer and one pawn, in which you can prove that a piece hasn't been on
(a) exactly 4 white squares
(b) exactly 5 white squares
(c) exactly 6 white squares
(d) exactly 7 white squares
(Example: with a pawn on g2, you can prove that a white bishop hasn't
been on h1 and g2)
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