On the Subject of IKEA Plushies

My beloved...

This module will have four images of IKEA® brand plushies which can be pressed, and a large yellow collector button.

The module takes place on a 3×5 grid. Pressing the button in each corner of the module will move your position one space in that diagonal direction on the grid. The grid wraps around in all directions (the IKEA® is infinite).

There will also be 4 trap tiles on the grid. You cannot move onto these tiles; attempting to do so will incur a strike and reset the module to its initial state. The grid used and the positions of these trap tiles is determined by the first digit of the serial number in the table on the following page.

Each plushie’s position on the grid will be determined by its appearance and the serial number. Your starting position on the grid is the sum of the serial number digits. The plushies’ positions can be obtained with the table on page 2. If any of these are not within the range 1-15, add or subtract 15 until they are.

These positions signify locations in reading order on the grid. If any plushies or the starting position land on any trap tiles, move its position 4 spaces forward in reading order, wrapping around.

Pressing the collector button will collect all plushies at the current position. Once all 4 plushies have been collected, the module will solve. Pressing the collector button when not on a plushie will incur a strike.

When calculating the positions of plushies, A, B, C, and D refer to the first, second, third, and fourth digits of the serial number. If any of these digits are 0, interpret them as 10.

Grids:

0
x
:)
x
x
x
1
:)
x x
:)
x
x
2
x
x
x
:)
x
3
x
:)
x x :)
:)
x
4
:)
x :)
x
x
x
5
:)
x x
x
x
:)
6
x
:)
x
x
x
7
x
x
x
:)
x
8
x
x
:)
x
x
9
:)
x
x
x x
:)

Calculation Table:

Plushie Name SN has 2 digits: SN has 3 digits: SN has 4 digits:
BLÅHAJ A+B A*B+C A*B+C*D
DJUNGELSKOG A A-B A+B+C A+B+C+D
KRAMIG A+2B A*B*C A-B+C-D
GOSIG A*B A+B*C (A+B+C)*D
JÄTTESTOR A+B+7 A+B-C A*(B-C)*D
JÄTTELIK A+B-3 (A-B)²+C A*B-C*D
DJUNGELSKOG B (A*B)-10 A-B+C A²-B²+(C*D)
SNUTTIG 3A-B A+2B-3C (A-8)+(B*C*D)
BRUNBJÖRN A²+B² A²+B²+C² (A²+B²)-(C²+D²)
KNORRIG 2A-B A-B-C A*B-C+D
LILLEPLUTT 3A+3B 2A+2B-C A+2B+3C+4D
DJUNGELSKOG C A²-B² A-B*C A*B+C-D

Plushie Reference:

BLÅHAJ DJUNGELSKOG A KRAMIG GOSIG
JÄTTESTOR JÄTTELIK DJUNGELSKOG B SNUTTIG
BRUNBJÖRN KNORRIG LILLEPLUTT DJUNGELSKOG C