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Skip navigationWow, number 50! In marriage terms, we have reached our golden anniversary. Lots of hard work, but I am sure you will agree, lots of great rewards too? Anyway, down to business:
I was happy to help out my cousins, distant though they were, but if they thought they were getting a free vacation, they were sadly mistaken. I’d been trying to get at a particular area of exposed rock to take some measurements and the local wildlife hadn’t been at all cooperative. I could temporarily lure them into large pens, but if I wasn’t careful with their placement, they’d run riot and break out–making it impossible to safely examine the traces of weather.
I had four different types of animal that I needed to contain–Frigatebird, lizard, seal, and tortoise. What figured I needed to do was find a way to make sure no animal shared a quadrant, row, or column with another animal of the same type.

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Row1: F, L, S, T
Row2: T, S, F, L
Row3: S, T, L, F
Row4: L, F, T, S
F=Frigatebird, L=Lizard, S=Seal, T=Tortoise
1. Frigatebird, lizard, seal, tortoise
2. Tortoise, Seal, Frigatebird, lizard
3. Seal, Tortoise, Lizard, Frigatebird
4. Lizard, Frigatebird, Tortoise, Seal
or
FLST
TSFL
STLF
LFTS
Row 1: bird, lizard, seal, tortoise
Row 2: tortoise, seal, bird, lizard
Row 3: seal, tortoise, lizard, bird
Row 4: lizard, bird, tortoise, seal
Frigate Bird, Lizard, seal, Tortoise
Toirtoise, seal, frigate bird, lizard
seal, tortoise, lizard, frigate bird
Lizard, frigate bird, tortoise, seal
Bird, Lizard, Seal, Turtle
Turtle, Seal, Bird, Lizard
Seal, Turtle, Lizard, Bird
Lizard, Bird, Turtle, Seal
All that needs to happen, is the seal needs to move down one box in its column. Resulting in Frigatebird in the 1st quadrant, row, and column, lizard in the 2nd quadrant, 4th column, and 2nd row, seal in the 3rd quadrant, 2nd column, and third row, and tortoise in the 4th quadrant and row, and 3rd column.
Animal Suduko!
Frigatebird, Lizard, Seal, Turtle
Turtle, Seal, Frigatebird, Lizard
Seal, Turtle, Lizard, Frigatebird
Lizard, Frigatebird, Turtle, Seal
frigatebird lizard seal tortoise
tortoise seal frigatebird lizard
seal tortoise lizard frigatebird
lizard frigatebird tortoise seal
F= frigatebird, L = lizard, S = seal, T = tortoise. From top to bottom, left to right:
FLST
TSFL
STLF
LFTS
Okay, from the top left:
Frigatebird, lizard, seal, and tortoise.
Tortoise, seal, frigatebird, lizard.
Seal, tortoise, lizard, frigatebird.
Lizard, frigatebird, tortoise, seal.
Row1: Frigatebird, lizard, seal, tortoise
Row2: tortoise, seal, Frigatebird, lizard
Row3: seal, tortoise, lizard, Frigatebird
Row4: lizard, Frigatebird, tortoise, seal
Frigate Bird, Tortoise, Seal, Lizard;
Lizard, Seal, Frigate Bird, Tortoise;
Tortoise, Frigate Bird, Lizard, Seal;
Seal, Lizard, Tortoise, Frigate Bird;
Row 1: frigate bird, lizard, seal, tortoise
Row 2: tortoise, seal, frigate bird, lizard
Row 3: seal, tortoise, lizard, frigate bird
Row 4: lizard, frigate bird, tortoise, seal
1: frigatebird lizard seal tortoise
2: tortoise seal frigatebird lizard
3: seal tortoise lizard frigatebird
4: lizard frigatebird tortoise seal
frigatebird, lizard, seal, tortoise
tortoise, seal, frigatebird, lizard
seal, tortoise, lizard, frigatebird
lizard, frigatebird, tortoise, seal
Row 1: Frigatebird, Lizard, Seal, Tortoise
Row 2: Tortoise, Seal, Frigatebird, Lizard
Row 3: Seal, Tortoise, Lizard, Frigatebird
Row 4: Lizard, Frigatebird, Tortoise, Seal
Row 1: Frigatebird, lizard, seal, tortoise
Row 2: Tortoise, seal, frigatebird, lizard
Row 3: Seal, tortoise, lizard, frigatebird
Row 4: Lizard, frigatebird, tortoise, seal
The frigatebird, lizard, and tortoise are already placed correctly. The seal needs to move down one row to the 3rd quadrant.
frigatebird
lizard
seal
tortoise
Row 1(l-r): Frigatebird, lizard, seal, tortoise
Row 2(l-r): tortoise, seal, frigatebird, lizard
Row 3(l-r): seal, tortoise, lizard, frigatebird
Row 4(l-r): lizard, frigatebird, tortoise, seal
Row 1: Frigatebird, lizard, seal, tortoise
Row 2: Tortoise, seal, frigatebird, lizard
Row 3: Seal, tortoise, lizard, frigatebird
Row 4: Lizard, frigatebird, tortoise, seal
Frigatebird, Lizard, Seal, Tortoise.
Tortoise, Seal, Frigatebird, lizard.
Seal, Tortoise ,lizard, Frigatebird.
Lizard, Frigatebird, tortoise, seal.
FrigateBird, Lizard, Seal, Tortoise
Tortoise, Seal, FrigateBird, Lizard
Seal, Tortoise, Lizard, FrigateBird
Lizard, FrigateBird, Tortoise, Seal
bird, lizard, seal, tortoise
tortoise, seal, bird, lizard
seal, tortoise, lizard, bird
lizard, bird, tortoise, seal
Qu 50:
Bird, Lizard, Seal, Tortoise
T, S, B, L
S, T, L, B
L, B, T, S