[Retros] The Problemist, Januari 2007

Joost de Heer joost at sanguis.xs4all.nl
Wed Jan 24 15:34:10 EST 2007


R381 - Eyjolfur Eyjolfsson
rsbqkbBr/pppp2p1/4pp1p/8/8/8/PPPPPKP1/RSBQ1BS1 (14+15)
+---a---b---c---d---e---f---g---h---+

| |

8 -R -S -B -Q -K -B B -R 8

| |

7 -P -P -P -P . . -P . 7

| |

6 . . . . -P -P . -P 6

| |

5 . . . . . . . . 5

| |

4 . . . . . . . . 4

| |

3 . . . . . . . . 3

| |

2 P P P P P K P . 2

| |

1 R S B Q . B S . 1

| |

+---a---b---c---d---e---f---g---h---+
SPG 11.0

R382 - Cedric Lytton, Alain Brobecker
1s2r1s1/1B4B1/8/8/r7/2P1S1RP/2Q1RK2/8 (9+4)
+---a---b---c---d---e---f---g---h---+

| |

8 . -S . . -R . -S . 8

| |

7 . B . . . . B . 7

| |

6 . . . . . . . . 6

| |

5 . . . . . . . . 5

| |

4 -R . . . . . . . 4

| |

3 . . P . S . R P 3

| |

2 . . Q . R K . . 2

| |

1 . . . . . . . . 1

| |

+---a---b---c---d---e---f---g---h---+
add the missing units for a legal
position in which no unit attacks an
enemy unit

F2531R - Peter Fayers
rsbq1ksr/p1pp1ppp/4p3/8/8/8/PPPPPPPP/RSBQKB1R (15+14)
+---a---b---c---d---e---f---g---h---+

| |

8 -R -S -B -Q . -K -S -R 8

| |

7 -P . -P -P . -P -P -P 7

| |

6 . . . . -P . . . 6

| |

5 . . . . . . . . 5

| |

4 . . . . . . . . 4

| |

3 . . . . . . . . 3

| |

2 P P P P P P P P 2

| |

1 R S B Q K B . R 1

| |

+---a---b---c---d---e---f---g---h---+
SPG 4.0, Vertical Mobius Strip

F2532R - Rene J. Millour
2Q1q1rR/P2sB2p/1b1K4/5p2/4pp2/2P4k/8/r4b2 (6+11)
+---a---b---c---d---e---f---g---h---+

| |

8 . . Q . -Q . -R R 8

| |

7 P . . -S B . . -P 7

| |

6 . -B . K . . . . 6

| |

5 . . . . . -P . . 5

| |

4 . . . . -P -P . . 4

| |

3 . . P . . . . -K 3

| |

2 . . . . . . . . 2

| |

1 -R . . . . -B . . 1

| |

+---a---b---c---d---e---f---g---h---+
-2 & #1 (help-retractor, Mars circe)
(b) bPe4->g5
(c) & wKd6->c5
(d) & wQc8->f6

Vertical mobius 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 in the diagram are bRa8xRh1,
bBc8-b7-a6-h4-g5-f6-e7, bSg8xa2.

The twins in F2532R are successive, the change for (c) is made
from the position in (b).



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