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Penguino's user avatar
Penguino's user avatar
Penguino's user avatar
Penguino
  • Member for 10 years
  • Last seen this week
41 votes
Accepted

Scratching my head can kill me

34 votes

Changing baby's shirt

31 votes
Accepted

Do better than chance

30 votes
Accepted

I am enclosed by rock and ice - What am I?

29 votes

Folding to One Triangle

26 votes
Accepted

Squaring a cross

25 votes
Accepted

Bongard n°1: Fruit Flies

23 votes

Weightless and Visible, who am I?

23 votes
Accepted

Rectangle in a Triangle

21 votes
Accepted

Two chunky pixelated X's locked in mortal combat!

20 votes

Card probability problem

18 votes
Accepted

sorting 4 numbers using Min - Max boxes

16 votes
Accepted

Which 3D shape can you make out of this?

15 votes
Accepted

What are these numbers?

15 votes
Accepted

Two Doors and a Guard

14 votes

Decide the owner of a blackbox between 2 people when there is no private channel of communication

13 votes
Accepted

Copycat chess is back

10 votes

Touching coins flat on a table

9 votes

Opening a safe by inputing a stream of numbers

9 votes

Minimum number of questions?

9 votes
Accepted

Five friends in a marathon race

8 votes
Accepted

Pucks in the arena

8 votes

Google's 20th Anniversary: Make 20 using 6 0 0 6 1 3

7 votes

Salesman's claim for mechanical keypad lock - 5 buttons and 545 combinations!

7 votes
Accepted

The Trials of Sir PacMan

7 votes

Santa Claus flies to the South Pole

6 votes
Accepted

Paint the rectangle with least movement

6 votes

What is the maximum total possible number of rectangles in the picture?

6 votes
Accepted

A very familiar object

6 votes
Accepted

Explain this pattern of water spots in a parking space