[Retros] Die Schwalbe Heft 243, Juni 2010

Joost de Heer joost at sanguis.xs4all.nl
Sat Jun 26 07:36:38 EDT 2010

An article by Werner Keym about 'Eine weitere Klärung bei den
Retro-Konventionen' (a further explanation to the retro-conventions). As a
bonus, Die Schwalbe members received a book by Werner Keym (Eigenartige
Schachproblemen, curious chess problems) for free.

14506 Nikolai Beluhov, Henrik Juel, Andrei Frolkin
6s1/3p1P1b/5psr/5KpQ/3P3Q/2PpSk1B/1Pp1RP1P/b1rB2R1 (14+12)
+---+---+---+---+---+---+---+---+

| | . | | . | | . |*S | . |

+---+---+---+---+---+---+---+---+

| . | | . |*P | . | P | . |*B |

+---+---+---+---+---+---+---+---+

| | . | | . | |*P |*S |*R |

+---+---+---+---+---+---+---+---+

| . | | . | | . | K |*P | Q |

+---+---+---+---+---+---+---+---+

| | . | | P | | . | | Q |

+---+---+---+---+---+---+---+---+

| . | | P |*P | S |*K | . | B |

+---+---+---+---+---+---+---+---+

| | P |*P | . | R | P | | P |

+---+---+---+---+---+---+---+---+

|*B | |*R | B | . | | R | |

+---+---+---+---+---+---+---+---+
Last move?

14507 - Werner Keym
r3k2r/pp4pp/4K3/8/8/2Q5/8/2B5 (3+7)
+---+---+---+---+---+---+---+---+

|*R | . | | . |*K | . | |*R |

+---+---+---+---+---+---+---+---+

|*P |*P | . | | . | |*P |*P |

+---+---+---+---+---+---+---+---+

| | . | | . | K | . | | . |

+---+---+---+---+---+---+---+---+

| . | | . | | . | | . | |

+---+---+---+---+---+---+---+---+

| | . | | . | | . | | . |

+---+---+---+---+---+---+---+---+

| . | | Q | | . | | . | |

+---+---+---+---+---+---+---+---+

| | . | | . | | . | | . |

+---+---+---+---+---+---+---+---+

| . | | B | | . | | . | |

+---+---+---+---+---+---+---+---+
White forces mate. Shortest complete solution?
[Weiß erzwingt Matt. Kürzeste vollständige Lösung?]

14508 - Werner Keym
4Bk2/1p3P2/1R3P1S/S1pPpKpP/sB1p4/p1P5/1R2P1P1/8 (14+8)
+---+---+---+---+---+---+---+---+

| | . | | . | B |*K | | . |

+---+---+---+---+---+---+---+---+

| . |*P | . | | . | P | . | |

+---+---+---+---+---+---+---+---+

| | R | | . | | P | | S |

+---+---+---+---+---+---+---+---+

| S | |*P | P |*P | K |*P | P |

+---+---+---+---+---+---+---+---+

|*S | B | |*P | | . | | . |

+---+---+---+---+---+---+---+---+

|*P | | P | | . | | . | |

+---+---+---+---+---+---+---+---+

| | R | | . | P | . | P | . |

+---+---+---+---+---+---+---+---+

| . | | . | | . | | . | |

+---+---+---+---+---+---+---+---+
#2

14509 - Guy Sobrecases, Michel Caillaud
rsb1kbsr/p1p1pp2/4p3/8/6B1/P1PP1Q2/P2PKP2/1S1RR1S1 (13+12)
+---+---+---+---+---+---+---+---+

|*R |*S |*B | . |*K |*B |*S |*R |

+---+---+---+---+---+---+---+---+

|*P | |*P | |*P |*P | . | |

+---+---+---+---+---+---+---+---+

| | . | | . |*P | . | | . |

+---+---+---+---+---+---+---+---+

| . | | . | | . | | . | |

+---+---+---+---+---+---+---+---+

| | . | | . | | . | B | . |

+---+---+---+---+---+---+---+---+

| P | | P | P | . | Q | . | |

+---+---+---+---+---+---+---+---+

| P | . | | P | K | P | | . |

+---+---+---+---+---+---+---+---+

| . | S | . | R | R | | S | |

+---+---+---+---+---+---+---+---+
SPG 19.0

14510 - Kostas Prentos, Mario Parrinello
2bqkbsr/1ppppRp1/1p6/RB3K2/8/3P1QPP/P1PSSP2/2B5 (14+12)
+---+---+---+---+---+---+---+---+

| | . |*B |*Q |*K |*B |*S |*R |

+---+---+---+---+---+---+---+---+

| . |*P |*P |*P |*P | R |*P | |

+---+---+---+---+---+---+---+---+

| |*P | | . | | . | | . |

+---+---+---+---+---+---+---+---+

| R | B | . | | . | K | . | |

+---+---+---+---+---+---+---+---+

| | . | | . | | . | | . |

+---+---+---+---+---+---+---+---+

| . | | . | P | . | Q | P | P |

+---+---+---+---+---+---+---+---+

| P | . | P | S | S | P | | . |

+---+---+---+---+---+---+---+---+

| . | | B | | . | | . | |

+---+---+---+---+---+---+---+---+
SPG 19.5

14511 - Silvio Baier
Dedicated to Nicolas Dupont
1b6/1pps2p1/2qk2b1/2rs2p1/1p4r1/2p1p1p1/1PP1P1P1/RSBQKBSR (12+16)
+---+---+---+---+---+---+---+---+

| |*B | | . | | . | | . |

+---+---+---+---+---+---+---+---+

| . |*P |*P |*S | . | |*P | |

+---+---+---+---+---+---+---+---+

| | . |*Q |*K | | . |*B | . |

+---+---+---+---+---+---+---+---+

| . | |*R |*S | . | |*P | |

+---+---+---+---+---+---+---+---+

| |*P | | . | | . |*R | . |

+---+---+---+---+---+---+---+---+

| . | |*P | |*P | |*P | |

+---+---+---+---+---+---+---+---+

| | P | P | . | P | . | P | . |

+---+---+---+---+---+---+---+---+

| R | S | B | Q | K | B | S | R |

+---+---+---+---+---+---+---+---+
SPG 29.5

14512 - Bernd Gräfrath
rs2kbsr/1p2pppp/2p5/8/2bq4/8/1P1P1PPP/1SBQK1SR (11+14)
+---+---+---+---+---+---+---+---+

|*R |*S | | . |*K |*B |*S |*R |

+---+---+---+---+---+---+---+---+

| . |*P | . | |*P |*P |*P |*P |

+---+---+---+---+---+---+---+---+

| | . |*P | . | | . | | . |

+---+---+---+---+---+---+---+---+

| . | | . | | . | | . | |

+---+---+---+---+---+---+---+---+

| | . |*B |*Q | | . | | . |

+---+---+---+---+---+---+---+---+

| . | | . | | . | | . | |

+---+---+---+---+---+---+---+---+

| | P | | P | | P | P | P |

+---+---+---+---+---+---+---+---+

| . | S | B | Q | K | | S | R |

+---+---+---+---+---+---+---+---+
SPG 9.5 Losing chess

14513 - Bernd Gräfrath
2r1k1sr/p1p1pp1p/3p4/8/3s4/6P1/2PPPP1P/bSBQK1SR (12+12)
+---+---+---+---+---+---+---+---+

| | . |*R | . |*K | . |*S |*R |

+---+---+---+---+---+---+---+---+

|*P | |*P | |*P |*P | . |*P |

+---+---+---+---+---+---+---+---+

| | . | |*P | | . | | . |

+---+---+---+---+---+---+---+---+

| . | | . | | . | | . | |

+---+---+---+---+---+---+---+---+

| | . | |*S | | . | | . |

+---+---+---+---+---+---+---+---+

| . | | . | | . | | P | |

+---+---+---+---+---+---+---+---+

| | . | P | P | P | P | | P |

+---+---+---+---+---+---+---+---+

|*B | S | B | Q | K | | S | R |

+---+---+---+---+---+---+---+---+
SPG 10.0 Losing chess

14514 - Wolfgang Dittmann
Dedicated to Günther Weeth's 75th birthday
1kB2K1b/1PpP3P/1Pp3P1/2p5/2p1Pr2/5P1r/6SP/7b (11+9)
+---+---+---+---+---+---+---+---+

| |*K | B | . | | K | |*B |

+---+---+---+---+---+---+---+---+

| . | P |*P | P | . | | . | P |

+---+---+---+---+---+---+---+---+

| | P |*P | . | | . | P | . |

+---+---+---+---+---+---+---+---+

| . | |*P | | . | | . | |

+---+---+---+---+---+---+---+---+

| | . |*P | . | P |*R | | . |

+---+---+---+---+---+---+---+---+

| . | | . | | . | P | . |*R |

+---+---+---+---+---+---+---+---+

| | . | | . | | . | S | P |

+---+---+---+---+---+---+---+---+

| . | | . | | . | | . |*B |

+---+---+---+---+---+---+---+---+
-22 & #1 Proca retractor, Anticirce

14515 - Alain Brobecker, Computer
kB6/R1P3p1/RKP2pp1/1PPP1P2/2PP4/8/8/8 (12+4)
+---+---+---+---+---+---+---+---+

|*K | B | | | | | | |

+---+---+---+---+---+---+---+---+

| R | | P | | | |*P | |

+---+---+---+---+---+---+---+---+

| R | K | P | | |*P |*P | |

+---+---+---+---+---+---+---+---+

| | P | P | P | | P | | |

+---+---+---+---+---+---+---+---+

| | | P | P | | | | |

+---+---+---+---+---+---+---+---+

| | | | | | | | |

+---+---+---+---+---+---+---+---+

| | | | | | | | |

+---+---+---+---+---+---+---+---+

| | | | | | | | |

+---+---+---+---+---+---+---+---+
Rotate the board for a legal position. Mate?

14516 - Nikolai Beluhov
KSkPP1Bb (5+2)
KB1bSPPk (5+2)
+---+---+---+---+---+---+---+---+

| K | S |*K | P | P | | B |*B |

+---+---+---+---+---+---+---+---+

+---+---+---+---+---+---+---+---+

| K | B | |*B | S | P | P |*K |

+---+---+---+---+---+---+---+---+
At eye level and from two different directions, the pieces appear as shown.
Pieces are only hidden by similar pieces (so behind a pawn, only other pawns
can hide). Reconstruct the position so white can mate in one.
In Augenhöhe und aus zwei unterschiedlichen Richtungen erscheinen die Figuren
auf dem Brett wie dargestellt, dabei werden Steine nur durch gleichartige
vollständig verdeckt. Rekonstruiere die Stellung, so dass Weiß in einem Zug
mattsetzen kann.

NOTE JdH: I removed the colouring of the squares in 14515 and 14516, because I
believe they are unnecessary.


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