[Retros] Five retro problems from Stuttgarter ZeitungKnud Hannemann, Skakbladet 1922 Mate in two moves a) as following b) rotation 90 degrees clockwise (wKh6 etc.) c) 180 degrees (wKf1) d) 270 degrees (wKa3) 2K5/2PP3R/5k1B/8/1N3P2/5PP1/1P2P3/1B6 Ralf Krätschmer, Die Schwalbe 2010 Mate in how many moves? a) as following b) rotation 90 degrees clockwise c) 180 degrees d) 270 degrees 8/4R1R1/Kp6/n1p2k1N/4p3/1B1P1p2/4pr2/8 Werner Keym, Allgemeine Zeitung Mainz 2002 White retracts one move, then mate in one a) as following b) rotation 90 degrees clockwise c) 180 degrees d) 270 degrees 4K3/8/4k3/3p1P2/8/8/8/Q7 Werner Tüngler, Schachfeld 2014, version It’s White to move in a position with 5 chessmen. White is winning. After a rotation of 90 degrees clockwise it’s a draw. After a 180 degrees rotation White loses. After a 270 degrees rotation it’s an illegal position. Which is the position? Werner Keym, original print Stuttgarter Zeitung 2023 Construct a position with as few chessmen as possible, in which as many as possible chessmen are on a square of the same colour. White to move draws. But if you flip the position horizontally, vertically or diagonally, White loses! Merry Christmas! – Harald Keilhack

[keilhack at aol.com]

The trademark theme of this years tasks is rotation.

 
KnudHannemann, Skakbladet 1922

Mate intwo moves

a) asfollowing b) rotation 90 degrees clockwise (wKh6 etc.) c) 180 degrees (wKf1) d)270 degrees (wKa3)

2K5/2PP3R/5k1B/8/1N3P2/5PP1/1P2P3/1B6

 

RalfKrätschmer, Die Schwalbe 2010

Mate inhow many moves?

a) asfollowing b) rotation 90 degrees clockwise c) 180 degrees d) 270 degrees

8/4R1R1/Kp6/n1p2k1N/4p3/1B1P1p2/4pr2/8

 

WernerKeym, Allgemeine Zeitung Mainz 2002

Whiteretracts one move, then mate in one

a) asfollowing b) rotation 90 degrees clockwise c) 180 degrees d) 270 degrees

4K3/8/4k3/3p1P2/8/8/8/Q7

 

WernerTüngler, Schachfeld 2014, version

It’s Whiteto move in a position with 5 chessmen. White is winning. After a rotation of 90degrees clockwise it’s a draw. After a 180 degrees rotation White loses. After a270 degrees rotation it’s an illegal position.

Which isthe position?

 

WernerKeym, original print Stuttgarter Zeitung 2023

Constructa position with as few chessmen as possible, in which as many as possiblechessmen are on a square of the same colour. White to move draws. But if you flipthe position horizontally, vertically or diagonally, White loses!

 

MerryChristmas! – Harald Keilhack


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