Can you solve a jigsaw sudoku puzzle with invisible walls? The sudoku part might be easy enough – fill in the grid with numbers and don’t repeat them in any row or column. However, you also can’t repeat them in an irregular region that you can’t see!
It’s the spooky season, and what’s more spooky than a darkened hallway? Place jack o’lanterns to light up every cell in the grid. Use the mirrors to your advantage.
A cluster of spiders looked at each other from their separate webs, and agreed that they could catch far more food if they worked together. So they decided to connect their webs. This unique species has numbers on their backs, which limits how many web strands they can weave. Can you help them catch dinner?
The masquerade ball is in full swing, but you realize that shapeshifting monsters have mixed into the crowd. Fortunately, they don’t fully grasp logical instructions. Many of your guests wore the same costume, and you ask them to stand in a grid where nobody in any row or column is dressed the same. Any duplicates must be doppelgängers!
You’ve been hired to examine a warehouse that’s rumored to be haunted. Your meter shows the total number of ghosts it detected. After a few short-range tests around the warehouse, you think you can exorcise them all now.
You’ve awakened trapped in the vampire castle, and all the doors are hidden! Can you figure out which rooms contain certain death, as well as the way to escape the castle, avoiding vampires, but touching each cross for protection?
After a late night working in the lab, you looked out from the balcony and found an eerie sight! Three types of local monsters have begun arranging themselves into groups. The rules seem pretty simple, but where will the rest go?
Everyone loves candy, so you picked up a gift box. The problem is, they only want a specific set of pieces, and none of them can touch each other, even diagonally. Can you deduce which of the possible placements to fill in with the candy that fits their preference?
The zombies are invading the forest! Fortunately, you’re VERY fast at building walls. Can you keep all the villagers safe from the zombie horde?
Igor! The flesh is loose on my masterpiece! Sew it together, following my specifications exactly – quickly, for a storm is approaching, and we must bring him to life tonight!
