The Problemist

March 2007

R383 - Eugene Dugas
The Problemist, March 2007

3+2. White and black retract, then black can h#1. Why?

[8/8/8/3P4/4k3/1p2P3/6K1/8]

R384 - Alexander Yarosh
The Problemist, March 2007

14+13. Legal position?

[2qrrkB1/K1pppr1b/p3NPRQ/5pRp/P5p1/3P4/1PP1PP1P/8]

F2544 - Stephen Emmerson
The Problemist, March 2007
Dedicated to Peter Fayers

16+15. Proof game in 4.5 moves a) diagram b) -bPg4 (Vertical Möbius Strip)

[rnbqk1nr/p1pppp1p/8/1p6/6p1/8/PPPPPPPP/RNBQKBNR]

Vertical Möbius Strip: The vertical edges of the board are imagined to be fixed to each other as in a Vertical Cylinder, but after having been twisted so that the 1-8 ranks on one side are adjacent to the 8-1 ranks on the other. Possible movements are bRa8xh1, bBc8-b7-a6-h4-g5-f6-e7-d8, bSg8xa2.