December 2023 Archives by date
Starting: Thu Dec 21 14:13:47 EST 2023
Ending: Sun Dec 24 07:58:59 EST 2023
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- [Retros] Stelvio 2.0
Reto Aschwanden
- [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
Last message date:
Sun Dec 24 07:58:59 EST 2023
Archived on: Sun Dec 24 07:59:11 EST 2023
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