The House of Thirteen Rooms

Great-Aunt Ottoline Mourncastle, puzzle-setter and devoted tea-drinker, has passed away at 97 in her favorite armchair and left you her tall, crooked house at the end of Crooked Lane, in the fog-bound town of Gloomwick. There is one condition: the house is yours only if you open all thirteen rooms, and every door is locked with one of her sudoku puzzles.

From the Entrance Hall to the Ballroom, the Clock Tower and the Cellar, each room opens with an illustrated page, a note from Ottoline’s ghost and, when the room brings something new, its rule explained with a small example. Solve the last lock of each room to collect a key, then use all twelve keys to open the Thirteenth Door.

Inside you will find

• 104 sudoku puzzles in 13 rooms, rising from easy to fiendish
• 9 kinds of grid: classic, letter grids (wordoku), windows, diagonal, crooked rooms (jigsaw sudoku), odd and even, consecutive, candlesticks, and killer-style cages
• Big 8.5 x 8.5 inch pages with large, clear grids and a 1-to-4-key difficulty rating on every puzzle
• How-to pages with a worked example and six useful techniques
• Gothic ink illustrations, a plan of the house to tick off, and a small black cat hiding in seven pictures
• Full solutions at the back, and an epilogue for when the last door opens

Every puzzle has exactly one solution and can be solved by logic alone, with no guessing. Made for adults who love sudoku and variant sudoku, dark whimsical art, haunted houses and gently spooky stories, and a thoughtful gift for goth and puzzle lovers alike.