[Retros] Christmas puzzles of Stuttgarter Zeitung - solutions

[keilhack at aol.com]

The chess column of the Stuttgarter Zeitung (run by Harald Keilhack) has published a set of retro chess puzzles. 
 
In the sign of the retracting a move, this year's Christmas puzzles are presented, as always, compiled by Werner Keym.
 By retracting a move, chess men that have already been captured can come back to life, and if necessary, a (pawn's) promotion can be reversed.
 As usual, it should always be checked whether there are multiple solutions. 


Puzzle 1:

Bernd Schwarzkopf

+---+---+---+---+---+---+---+---+
|? ?|? ?|? ?|? ?|? ?|? ?|? ?|? ?|
+---+---+---+---+---+---+---+---+
|? ?|? ?|? ?|? ?|? ?|? ?|? ?|? ?|
+---+---+---+---+---+---+---+---+
|? ?|? ?|? ?|? ?|? ?|? ?|? ?|? ?|
+---+---+---+---+---+---+---+---+
|? ?|? ?|? ?|? ?|? ?|? ?|? ?|? ?|
+---+---+---+---+---+---+---+---+
|? ?|? ?|? ?|? ?|? ?|? ?|? ?|? ?|
+---+---+---+---+---+---+---+---+
| P |? ?| k |? ?|? ?|? ?|? ?|? ?|
+---+---+---+---+---+---+---+---+
| P |? ?|? ?|? ?|? ?|? ?|? ?|? ?|
+---+---+---+---+---+---+---+---+
| R |? ?|? ?|? ?|? ?| R | K |? ?|
+---+---+---+---+---+---+---+---+

[8/8/8/8/8/P1k5/P7/R4RK1]

White retracts a move and checkmates in three moves instead. (5+1)


Retract 1.0-0, then 1.0-0-0 Kc4 2.Rh5 Kc3 3.Rc5#.

Puzzle 2:

Werner Keym, Stuttgarter Zeitung 2005

+---+---+---+---+---+---+---+---+
|? ?|? ?|? ?| R |? ?|? ?|? ?| B |
+---+---+---+---+---+---+---+---+
|? ?|? ?|? ?| p |? ?|? ?|? ?|? ?|
+---+---+---+---+---+---+---+---+
|? ?|? ?|? ?|? ?| k | P |? ?|? ?|
+---+---+---+---+---+---+---+---+
|? ?|? ?|? ?|? ?|? ?|? ?|? ?|? ?|
+---+---+---+---+---+---+---+---+
|? ?|? ?|? ?|? ?|? ?|? ?|? ?|? ?|
+---+---+---+---+---+---+---+---+
|? ?|? ?|? ?|? ?|? ?|? ?|? ?|? ?|
+---+---+---+---+---+---+---+---+
|? ?|? ?|? ?|? ?|? ?|? ?|? ?|? ?|
+---+---+---+---+---+---+---+---+
|? ?| B |? ?|? ?|? ?|? ?|? ?| K |
+---+---+---+---+---+---+---+---+

[3R3B/3p4/4kP2/8/8/8/8/1B5K]

White retracts a move and checkmates in two moves instead. (5+2)
a) diagram
b) Bh8 -> f8

Retract e5xf6 e.p., 1.Ba2+ d5 2.e5xd6 e.p.# or 1...Ke7 2.Bf6#.
Retract e7xNd8R, 1.e8Q+ Kxf6 2.Qe7# or 1...Kd5 2.Qe4#, Two times en passant and two underpromotions. 

Puzzle 3:

Jens Guballa

+---+---+---+---+---+---+---+---+
|? ?| r | B | B |? ?|? ?|? ?|? ?|
+---+---+---+---+---+---+---+---+
|? ?| n |? ?|? ?|? ?|? ?|? ?|? ?|
+---+---+---+---+---+---+---+---+
|? ?|? ?| k | P |? ?|? ?|? ?|? ?|
+---+---+---+---+---+---+---+---+
|? ?| p | p |? ?|? ?|? ?|? ?|? ?|
+---+---+---+---+---+---+---+---+
|? ?|? ?| P |? ?|? ?|? ?|? ?|? ?|
+---+---+---+---+---+---+---+---+
|? ?|? ?|? ?|? ?|? ?|? ?|? ?|? ?|
+---+---+---+---+---+---+---+---+
|? ?|? ?|? ?|? ?|? ?|? ?|? ?|? ?|
+---+---+---+---+---+---+---+---+
|? ?|? ?| K | R |? ?|? ?|? ?|? ?|
+---+---+---+---+---+---+---+---+

[1rBB4/1n6/2kP4/1pp5/2P5/8/8/2KR4]

White retracts a move and checkmates in one move instead. (6+5)

First solution retract 0-0-0, 1.Ra6#, Second solution retract c7-c8B, 1.c7xb8N#. Third solution retract e5xd6 e.p., 1.c4xd5#. Valladao including underpromotion! 

Best wishes! - Harald Keilhack, with thanks to Werner Keym and Jens Guballa!
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