An engrossing primer on sudoku as seen from the creator’s side.

CREATE CLASSIC SUDOKU

Readers tired of solving sudoku puzzles can try creating them with this fun debut how-to manual.

Zheng’s doctoral research at the University of Nebraska-Lincoln in 2011 involved programming computers to make sudoku puzzles. In this book, she distills the craft into step-by-step procedures that readers can use to make the familiar grids. In a sudoku game, each of the numbers one through nine appears once in each row, column, and three-by-three “box.” The author’s simple process starts with a top row of randomly arranged numbers; readers can then create subsequent rows by “shifting” numbers from the previous row in particular ways. (The procedure also allows readers to build the grid by using columns or boxes instead of rows.) Zheng then provides other rules to help readers make the grid more random. She doesn’t go into the mathematics behind her procedures; she just lays them out as a practical recipe, with lucid, illustrative examples that make the process so easy that complete novices will be able to make sudoku grids in a few minutes. Then comes the hard part—figuring out which squares to erase so that the grid becomes a challenging but still solvable puzzle. Erase too few and the puzzle is too easy; erase too many and it lacks a single, unique solution. To that end, Zheng prescribes methods for deciding which squares to omit, using two elementary tests to determine whether players will be able to deduce the numbers from the remaining squares. The author notes that the procedure amounts to solving the puzzle in reverse. Creating a puzzle is therefore as difficult as solving one, perhaps more so, because there’s no gratifying endpoint—one simply erases squares until the puzzle becomes hard to figure out. Thus, while sudoku-solving climaxes in a triumphant solution, sudoku-making simply grinds to a halt. Still, Zheng’s guide offers readers a vigorous mental workout.

An engrossing primer on sudoku as seen from the creator’s side.

Pub Date: June 10, 2015

ISBN: 978-0-9962042-0-0

Page Count: 132

Publisher: CreateSpace

Review Posted Online: Dec. 2, 2015

Kirkus Reviews Issue: Jan. 1, 2016

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DEAR MR. HENSHAW

Pub Date: Aug. 22, 1983

ISBN: 143511096X

Page Count: 133

Publisher: Morrow/HarperCollins

Review Posted Online: Oct. 16, 2011

Kirkus Reviews Issue: Aug. 1, 1983

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Necessarily swift and adumbrative as well as inclusive, focused, and graceful.

A LITTLE HISTORY OF POETRY

A light-speed tour of (mostly) Western poetry, from the 4,000-year-old Gilgamesh to the work of Australian poet Les Murray, who died in 2019.

In the latest entry in the publisher’s Little Histories series, Carey, an emeritus professor at Oxford whose books include What Good Are the Arts? and The Unexpected Professor: An Oxford Life in Books, offers a quick definition of poetry—“relates to language as music relates to noise. It is language made special”—before diving in to poetry’s vast history. In most chapters, the author deals with only a few writers, but as the narrative progresses, he finds himself forced to deal with far more than a handful. In his chapter on 20th-century political poets, for example, he talks about 14 writers in seven pages. Carey displays a determination to inform us about who the best poets were—and what their best poems were. The word “greatest” appears continually; Chaucer was “the greatest medieval English poet,” and Langston Hughes was “the greatest male poet” of the Harlem Renaissance. For readers who need a refresher—or suggestions for the nightstand—Carey provides the best-known names and the most celebrated poems, including Paradise Lost (about which the author has written extensively), “Kubla Khan,” “Ozymandias,” “The Charge of the Light Brigade,” Wordsworth and Coleridge’s Lyrical Ballads, which “changed the course of English poetry.” Carey explains some poetic technique (Hopkins’ “sprung rhythm”) and pauses occasionally to provide autobiographical tidbits—e.g., John Masefield, who wrote the famous “Sea Fever,” “hated the sea.” We learn, as well, about the sexuality of some poets (Auden was bisexual), and, especially later on, Carey discusses the demons that drove some of them, Robert Lowell and Sylvia Plath among them. Refreshingly, he includes many women in the volume—all the way back to Sappho—and has especially kind words for Marianne Moore and Elizabeth Bishop, who share a chapter.

Necessarily swift and adumbrative as well as inclusive, focused, and graceful.

Pub Date: April 21, 2020

ISBN: 978-0-300-23222-6

Page Count: 304

Publisher: Yale Univ.

Review Posted Online: Feb. 9, 2020

Kirkus Reviews Issue: March 1, 2020

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