[Retros] Two brain teasers from Stuttgarter Zeitung

[Jens Guballa]

Dear retro-friends,

Two Christmas brain-teasers (originals) have been published in Harald
Keilhack's chess column of the newspaper Stuttgarter Zeitung:

1. Jens Guballa
+---+---+---+---+---+---+---+---+
|   |   | R |   |   |   |   |   |
+---+---+---+---+---+---+---+---+
|   | b |   |   |   |   |   |   |
+---+---+---+---+---+---+---+---+
|   | q |   | P |   |   |   |   |
+---+---+---+---+---+---+---+---+
|   |   |   |   | k |   | K |   |
+---+---+---+---+---+---+---+---+
|   |   | P |   |   |   |   |   |
+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   |   |   |
+---+---+---+---+---+---+---+---+
|   |   |   | P |   | Q |   |   |
+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   |   |   |
+---+---+---+---+---+---+---+---+
[2R5/1b6/1q1P4/4k1K1/2P5/8/3P1Q2/8] (6+3)
White retracts a move and checkmates with another move.

2. Werner Keym
+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   |   | B |
+---+---+---+---+---+---+---+---+
| P |   | P |   |   |   |   |   |
+---+---+---+---+---+---+---+---+
|   |   |   | R |   |   |   | N |
+---+---+---+---+---+---+---+---+
|   |   | P | P | p |   |   |   |
+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   |   |   |
+---+---+---+---+---+---+---+---+
| Q | P | N | P |   |   |   |   |
+---+---+---+---+---+---+---+---+
|   |   |   | P |   |   |   | P |
+---+---+---+---+---+---+---+---+
|   |   |   |   | K |   |   | R |
+---+---+---+---+---+---+---+---+
[7B/P1P5/3R3N/2PPp3/8/QPNP4/3P3P/4K2R](15+1+1)
Add the black king and checkmate in one move.

Always check if multiple solutions exist.

The solutions will be published at 11th of January.

All the best and happy Christmas!
Jens
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