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The Problemist

January 2007

R381 - Eyjolfur Eyjolfsson
The Problemist, January 2007

[rnbqkbBr/pppp2p1/4pp1p/8/8/8/PPPPPKP1/RNBQ1BN1]

14+15. Shortest proof game in 11.0 moves

[rnbqkbBr/pppp2p1/4pp1p/8/8/8/PPPPPKP1/RNBQ1BN1]


R382 - Cedric Lytton, Alain Brobecker
The Problemist, January 2007

[1n2r1n1/1B4B1/8/8/r7/p1P1N1RP/2Q1RK2/8]

9+4. Add the missing units for a legal position in which no unit attacks an enemy unit

[1n2r1n1/1B4B1/8/8/r7/p1P1N1RP/2Q1RK2/8]


F2531R - Peter Fayers
The Problemist, January 2007

[rnbq1knr/p1pp1ppp/4p3/8/8/8/PPPPPPPP/RNBQKB1R]

15+14. Shortest Proof Game in  4 moves (Vertical Mobius Strip)

[rnbq1knr/p1pp1ppp/4p3/8/8/8/PPPPPPPP/RNBQKB1R]


F2532R - Rene J. Millour
The Problemist, January 2007

[2Q1q1rR/P2nB2p/1b1K4/5p2/4pp2/2P4k/8/r4b2]

6+11. Retract 2 moves, then mate in 1 move (help-retractor, Mars circe)

a) diagram
b) bPe4->g5
c) & wKd6->c5
d) & wQc8->f6

[2Q1q1rR/P2nB2p/1b1K4/5p2/4pp2/2P4k/8/r4b2]


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.