Sudoku Books

Now that we've reached the post-postmodern era, presumably there's nobody left who needs liberating from the strictures of conventional fiction. So apart from its narrative high jinks, what does House of Leaves have to offer? According to Johnny Truant, the tattoo-shop apprentice who discovers Zampanò's work, once you read The Navidson Record,

For some reason, you will no longer be the person you believed you once were. You'll detect slow and subtle shifts going on all around you, more importantly shifts in you. Worse, you'll realize it's always been shifting, like a shimmer of sorts, a vast shimmer, only dark like a room. But you won't understand why or how.

Despite his flaws, Truant is an appealingly earnest amateur editor--finding translators, tracking down sources, pointing out incongruities. Danielewski takes an academic's--or ex-academic's--glee in footnotes (the similarity to David Foster Wallace is almost too obvious to mention), as well as other bogus ivory-tower trappings such as interviews with celebrity scholars like Camille Paglia and Harold Bloom. And he stuffs highbrow and pop-culture references (and parodies) into the novel with the enthusiasm of an anarchist filling a pipe bomb with bits of junk metal. House of Leaves may not be the prettiest or most coherent collection, but if you're trying to blow stuff up, who cares? --John Ponyicsanyi

Su Doku, "the crossword without words," comes with a warning: it is seriously addictive. You don't need to be a mathematical genius to solve these puzzles; it is simply a question of logic and a little patience.

Killer Su Doku is based on the original Su Doku grid, with the same rules and numbers—1 to 9—but with an added deadly twist. This time there is an element of arithmetic involved and there are few, if any, clues. The aim is to not only complete every row, column, and cube so that it contains the digits 1 to 9, but to also fill in the outlined cubes so they add up to the same number.

Hints to solve the puzzle are hidden in the joined squares where only one combination of numbers applies. In the case of joined squares, if the printed number is 3, it should be 1 and 2 that go into the squares. Likewise, in the case of three joined squares, if the printed number is 6, the only combination possible is 1, 2, and 3.

To add one final fiendish level, each puzzle also has a time worked out by its Japanese creators so you can try to beat the clock.