[Retros] Traditional Christmas Contest of Stuttgarter Zeitung 2015

[Jens Guballa]

Hi,

The traditional Christmas contest of the newspaper Stuttgarter Zeitung
has been published.

Harald Keilhack invites the readers solving five riddles.

The contest is published here:
http://www.kaniaverlag.de/htm/Weihnachts2015.html (German only).

Find below my translation:

Senders with complete correct solutions will receives a book prize.

Always take care to remain a legal position after a retraction / adding
a chess man. And check if more than one solution exists. For the
positions C-E it is always white who starts with the retraction.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

A: Günther Weeth
+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   |   |   |
+---+---+---+---+---+---+---+---+
|   |   |   |   | p |   | p |   |
+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   | Q | B |
+---+---+---+---+---+---+---+---+
|   |   |   | P |   |   |   | p |
+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   | P | R |
+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   | k |   |
+---+---+---+---+---+---+---+---+
|   |   |   |   | P |   |   |   |
+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   | K |   |
+---+---+---+---+---+---+---+---+
[8/4p1p1/6QB/3P3p/6PR/6k1/4P3/6K1]
http://www.kaniaverlag.de/Diagramme/2015A.JPG

After adding a chess man: checkmate in one (half) move. 

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

B: Bernd Schwarzkopf
+---+---+---+---+---+---+---+---+
|   |   |   | n | r | n |   |   |
+---+---+---+---+---+---+---+---+
|   | p |   |   | k |   |   | p |
+---+---+---+---+---+---+---+---+
|   |   | P |   | P |   | P |   |
+---+---+---+---+---+---+---+---+
|   |   | P | p | K | p | P |   |
+---+---+---+---+---+---+---+---+
|   |   |   | p | P | p |   |   |
+---+---+---+---+---+---+---+---+
|   |   |   |   | B |   |   |   |
+---+---+---+---+---+---+---+---+
|   |   |   | P |   | P |   |   |
+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   |   |   |
+---+---+---+---+---+---+---+---+
[3nrn2/1p2k2p/2P1P1P1/2PpKpP1/3pPp2/4B3/3P1P2/8]
http://www.kaniaverlag.de/Diagramme/2015B.JPG

White retracts a move and checkmates instead in one move.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

C: Günther Weeth
+---+---+---+---+---+---+---+---+
|   | r | b | k |   |   |   |   |
+---+---+---+---+---+---+---+---+
| p |   | p |   |   | p | p |   |
+---+---+---+---+---+---+---+---+
|   |   |   |   | p | P |   |   |
+---+---+---+---+---+---+---+---+
|   |   | K |   |   |   |   |   |
+---+---+---+---+---+---+---+---+
| p |   |   |   | B |   |   | r |
+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   |   |   |
+---+---+---+---+---+---+---+---+
|   |   |   |   | P |   | P | P |
+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   |   |   |
+---+---+---+---+---+---+---+---+
[1rbk4/p1p2pp1/4pP2/2K5/p3B2r/8/4P1PP/8]
http://www.kaniaverlag.de/Diagramme/2015C.JPG

Add a pawn. Then white retracts two moves, black one. Afterwards
checkmate in one move. Proca Retractor.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

D: Günther Weeth/Werner Keym
+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   |   |   |
+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   |   |   |
+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   |   |   |
+---+---+---+---+---+---+---+---+
|   | n |   |   |   | n |   | k |
+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   |   |   |
+---+---+---+---+---+---+---+---+
|   | K |   |   |   |   |   |   |
+---+---+---+---+---+---+---+---+
| B |   | p |   |   |   |   |   |
+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   |   |   |
+---+---+---+---+---+---+---+---+
[8/8/8/1n3n1k/8/1K6/B1p5/8]
http://www.kaniaverlag.de/Diagramme/2015D.JPG

White and black both retract three moves (cooperative play by black),
so that white must capture unambiguously with the forth retracting move
(as well).

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

E: Günther Weeth/Werner Keym/Klaus Wenda
+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   |   | N |
+---+---+---+---+---+---+---+---+
|   |   |   |   |   | p |   | B |
+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   | P |   |
+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   | P |   |
+---+---+---+---+---+---+---+---+
|   |   | P | P | P |   |   | p |
+---+---+---+---+---+---+---+---+
|   |   |   |   |   | P |   | P |
+---+---+---+---+---+---+---+---+
| R |   |   | K |   |   | p | P |
+---+---+---+---+---+---+---+---+
| R |   |   |   |   |   | B | k |
+---+---+---+---+---+---+---+---+
[7N/5p1B/6P1/6P1/2PPP2p/5P1P/R2K2pP/R5Bk]
http://www.kaniaverlag.de/Diagramme/2015E.JPG

White retracts four moves, black three moves. Then checkmate in one
move. Proca Retractor.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Send your solutions by latest 15th Jan. 2016 (postmark) to:
Stuttgarter Zeitung (Schach)
Postfach 106032
70049 Stuttgart
Germany

Best regards,
Jens