Logic Masters Deutschland e.V.

Inselhafen, Teil 4

(Published on 20. September 2018, 18:00 by pirx)

Nurikabe
Shade some empty cells black so that the grid is divided into white areas, each containing exactly one number and with the same area in cells as that number. Two white areas may only touch diagonally. All black cells (water) must be connected with each other, but no 2×2 group of cells can be entirely shaded black. Numbers must not be blackened.

Battleships
Place the given ships into water cells of the grid, horizontally or vertically. Ships can not be placed in horizontally, vertically or diagonally adjacent cells. The numbers on the left and top border indicate the number of ship segments in the respective row or column.


Now the fleet moves, and the ships change their positions.
  • a 3-ship moves on one cell,
  • a 2-ship moves on two cells,
  • a 1-ship moves on three cells.

The path of a ship forms a tetromino as shown below, with rotations and reflections allowed. The tetrominos must be placed on water cells, and they do not touch, not even diagonally.

Find the positions of the ships before (upper diagram) and after completing the movement (bottom diagram). Of course, the islands remain fixed and occupy the same cells in both diagrams.


When solving, ignore the letters and numbers on the right and bottom border; they only serve as coordinates for the answer key.

Solution code: The coordinates of the three smallest ships, row by row from top to bottom; the upper diagram first, then the bottom diagram (e.g. A5A0C1 E4F0H6).

Last changed on -

Solved by tuace, zuzanina, jessica6, Joe Average, NikolaZ, Luigi, jalbert, ibag, zorant, dm_litv, Zzzyxas
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Comments

on 15. October 2018, 02:49 by ibag
Superschön, aber ein ganz schöner Brocken!

Last changed on 30. September 2018, 21:30

on 30. September 2018, 20:44 by Joe Average
"...nach dem ersten gescheiterten Versuch noch einen zweiten zu starten" ?

Bei mir waren es eher zwei Dutzend Versuche. Schöne Tüftelarbeit, auch wenn ich ein logisches Element erst sehr spät erkannt habe.

on 26. September 2018, 01:38 by jessica6
Ich hatte immer wieder einen Widerspruch. Entweder paßten die Randhinweise nicht, oder die Anzahl Tetrominos, oder ein 2x2-Wasserbereich, oder das Wasser war nicht zusammenhängend.
Aber irgendwann ging es dann doch auf.

on 24. September 2018, 21:54 by zuzanina
Vielen Dank! Es hat sich sehr gelohnt dran zu bleiben und nach dem ersten gescheiterten Versuch noch einen zweiten zu starten! :-)

Difficulty:4
Rating:N/A
Solved:11 times
Observed:2 times
ID:0002WE

Puzzle combination Placement puzzle Tetrominoes

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