An entry in Fortnightly Topic Challenge #32: Grid Deduction Hybrids
My dear friend, unknown to us, may have relocated again. He sent me imagery and constellation maps indicating that a distant red spiraling galaxy was at his zenith, and nearly collinear with the largest local galactic cores. ...
I took a Mensa online IQ test(https://www.mensa.lu/en/mensa/online-iq-test/online-iq-test.html) and encountered this question which I wasn't able to do:
This question is basically a visual analogy, where the first picture is to the second picture as the third picture is to the forth picture. Thi...
An entry in Fortnightly Topic Challenge #42: Wordless Connecting Walls
This is it. This is the very wall.
His life, his work — this wall was the center of it all. One simply cannot imagine his fame, greatness, and legacy without thinking about how this wall was always there to witness all his up...
What is the simple rule behind these three relations below?
$F$ $\rightarrow$ $C$ :: $R$ $\rightarrow$ $I$ $\rightarrow$ $\sqrt{F}$ ::
$IA$ $\rightarrow$ $D$
Q42's game 0hh1 and Simon Tatham's game Unruly are two almost identical logical deduction games. In each one, we're given a square grid which is to be filled by tiles of two colours, and a certain initial setup of given tiles. We need to fill in the rest of the tiles, subject to the following res...
The rules of Binairo are simple:
1) Each row and column must have an equal number of black and white circles.
2) There can be no horizontal/vertical line of three like-color circles.
Starting from a position of fixed circles (indicated by those with dots in the center), one can complete a g...
A constant is hiding behind this puzzle, can you tell which?
4 $\rightarrow$ 2 $\rightarrow$ 1 $\rightarrow$ 1 $\rightarrow$ 1 $\rightarrow$ $\dots$
? $\rightarrow$ ? $\rightarrow$ ? $\rightarrow$ $\dots$
4 $\rightarrow$ 3 $\rightarrow$ 6 $\rightarrow$ 0
2 $\rightarrow$ 1 $\rightarrow$ ...
Initially, I have $3$ cups with infinite capacity and some prefilled amount of water(positive integers). I can do only one operation repeatedly by choosing any $2$ out of $3$. The operation is that if you have $2$ cups with volume $a$ and $b$ and $a <= b$, then the operation changes the volume as...
