hello there = llehht oere Voldemort's Wrath = dloVrome s'ttarWh This is weird, right? = sihT si riewr ,dthgi? Just figure out what is happening to these words. = tsuJgif eru tuotahw si ppahnineot geht w essdro. Let me know what you come up with! = teLk em wontahwuoy moc pu etiw !h Note: It's n...

This is the third installment of the Fortnightly Topic Challenges Rerun described here and the forty-fourth installment of the FTCs overall, with topics suggested and voted on here. This fortnight's topic is "Introduce a new grid deduction genre to the community" (suggested by Bubbler) and will s...

Start by placing number $1$ anywhere on an infinite square grid. Now place numbers $2, 3, 4, \ldots, K$ in order. A number $k$ can be placed if the following rules hold: It must be adjacent (horizontally or vertically) to the previous number $k-1$. It must have at least one neighbour (horizontal...

There is an infinite grid of squares. In one of the squares, there lives an amoeba (marked as a circle in the following pictures). Amoebas cannot move, but they can perform their unique action: an amoeba can split itself into two amoebas, which are identical to the original one, and each will occ...

I think I just thought of a new type of puzzle: Social Distancing Colors. Each of the colors in the rainbow represents at least how much one has to distance by: Red is 6m, Orange is 5m, Yellow is 4m, Green is 3m, Blue is 2m, Indigo is 1m, and Purple doesn’t need to distance. Each meter is a squar...

Can you find the next number in this baffling sequence? 925, 955, 1040, 1140, 1255, 225, 410, ?

After going to the depths of the ocean, you have finally reached it: the ultimate treasure of the world. However, when you go inside the sacred treasure room, you are presented with the Four Clams. They had an argument since one of them has angered Poseidon, the king of the sea. So, they decided ...

Here is a standard Yin-Yang puzzle. Rules of Yin-Yang: Fill each empty cell with either a black circle or a white circle. All white circles should be orthogonally connected, so do all black circles. There may not be any 2x2 cell region consisting of the same circle color.

This is an entry for Fortnightly Topic Challenge #44: Introduce a new grid deduction genre to the community This is a Nurimisaki puzzle, an area-connection puzzle. Rules of Nurimisaki (taken from Nikoli): Shade each cell either white or black according to the rules below Cells with a circle re...

This is an entry for Fortnightly Topic Challenge #44: Introduce a new grid deduction genre to the community This is a Tatamibari puzzle, where you divide the grid into rectangles and squares. Rules taken from Wikipedia: Every partition must contain exactly one symbol in it. A + symbol must be c...

What logic is followed below to get the numbers for the months? MARCH = 3142 APRIL = 1232 MAY = 1121 JUNE = 1220 JULY = ?

Nurikabe is a popular grid puzzle, usually played on a square grid. Here is my attempt to adapt it to a hexagonal grid. To solve it, you must shade cells in the grid such that these conditions are met: Like regular Nurikabe, each number indicates the size of a region of unshaded cells containing...