Written for a wide audience, this is the full story of Hex, inside and out, with all its twists and turns: Hein's creation, Lindhard's puzzles, Nash's proofs, Gale's Bridg-it, the game of Rex, Shannon's machines, Bridg-it's fall, Hex's resilience, Hex theory, the hunt for winning strategies, and the rise of Hexbots.
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Click here to see a review of the book, along with some Hex puzzles set by Oliver Roeder of FiveThirtyEight.
"The full story of the game of Hex as told in this ambitious book is in fact two rather distinct stories. On the one hand, there is a deeply human story of how the game of Hex came about and how it has developed over the years; this is a fascinating historical tale full of interesting and often brilliant characters. On the other hand, there is also what is essentially a mathematical story of the game itself; what mathematical theory is involved, what sort of strategies are needed to play the game well, how Hex is similar to or different from games such as chess and Go, and how well computers do playing against expert human Hex players.
[. . . ] The story of the birth and early success of Hex has been meticulously researched here and is extremely well told. In particular, the book contains many wonderful old photographs. [. . .] At this point humans still seem to have an advantage over computers on 13 × 13 boards and larger, but as the authors say, 'The story of Hex continues'"
-MathSciNet Mathematical Reviews, American Mathematical Society
". . . this is not a mathematics textbook, and people who are not terribly interested in mathematical proofs and reasoning will still find much of interest here. In addition to discussing some of the mathematics behind the game, for example, the book also addresses at great length the history of Hex [. . .]. In addition to tracing the history of Hex, the authors also include lots of actual puzzles, with solutions, and discuss at length aspects of Hex strategy. Games that are related to Hex, such as Bridg-It and Rex (also known as "reverse Hex"), are also discussed. [. . .] Because of its mathematical content, instructors of courses in subjects like game theory or discrete mathematics might want to flip through it as a potential source of lecture material. People interested in the history of mathematics might find some of the biographical and historical detail here interesting. And of course anybody who enjoys the game of Hex will find much of here interest as well. It's a fun book."
-Mark Hunacek, MAA Reviews
"Any well-defined strategy game raises at least two mathematical questions: which player (first or second) wins with best play? and how? Complex games with ad hoc rules (e.g., chess) generally lack symmetry sufficient to fuel mathematical analysis, but many games of elegant simplicity still prove fiendishly hard to crack. Topological principles inspired the creation of Hex by Piet Hein in 1942. Actually a family of games, Hex is played on rhombuses of various sizes paved with hexagonal cells; players alternately take control of cells while aiming to forge a path, however contorted, connecting opposite sides of the rhombus. Famously, while John Nash proved first players win with best play, his non-constructive argument offers no insight into the ideal strategy. Complete computer analysis now handles up to 10 x 10 Hex, but Hein's original 11 x 11 version probably offers complexity sufficient for decades more of vital play. The present volume covers history, variant forms, underlying mathematical ideas, information about exhaustive small-board strategies, and state-of-the-art computer play on full-sized (11 x 11 or 13 x 13) boards. More systematic but less up-to-date, Connections Games by Cameron Browne complements the current volume."
-D. V. Feldman, University of New Hampshire, CHOICE Reviews
"The full story of the game of Hex as told in this ambitious book is in fact two rather distinct stories. On the one hand, there is a deeply human story of how the game of Hex came about and how it has developed over the years; this is a fascinating historical tale full of interesting and often brilliant characters. On the other hand, there is also what is essentially a mathematical story of the game itself; what mathematical theory is involved, what sort of strategies are needed to play the game well, how Hex is similar to or different from games such as chess and Go, and how well computers do playing against expert human Hex players.
[. . . ] The story of the birth and early success of Hex has been meticulously researched here and is extremely well told. In particular, the book contains many wonderful old photographs. [. . .] At this point humans still seem to have an advantage over computers on 13 × 13 boards and larger, but as the authors say, 'The story of Hex continues'"
-MathSciNet Mathematical Reviews, American Mathematical Society
". . . this is not a mathematics textbook, and people who are not terribly interested in mathematical proofs and reasoning will still find much of interest here. In addition to discussing some of the mathematics behind the game, for example, the book also addresses at great length the history of Hex [. . .]. In addition to tracing the history of Hex, the authors also include lots of actual puzzles, with solutions, and discuss at length aspects of Hex strategy. Games that are related to Hex, such as Bridg-It and Rex (also known as "reverse Hex"), are also discussed. [. . .] Because of its mathematical content, instructors of courses in subjects like game theory or discrete mathematics might want to flip through it as a potential source of lecture material. People interested in the history of mathematics might find some of the biographical and historical detail here interesting. And of course anybody who enjoys the game of Hex will find much of here interest as well. It's a fun book."
-Mark Hunacek, MAA Reviews
"Any well-defined strategy game raises at least two mathematical questions: which player (first or second) wins with best play? and how? Complex games with ad hoc rules (e.g., chess) generally lack symmetry sufficient to fuel mathematical analysis, but many games of elegant simplicity still prove fiendishly hard to crack. Topological principles inspired the creation of Hex by Piet Hein in 1942. Actually a family of games, Hex is played on rhombuses of various sizes paved with hexagonal cells; players alternately take control of cells while aiming to forge a path, however contorted, connecting opposite sides of the rhombus. Famously, while John Nash proved first players win with best play, his non-constructive argument offers no insight into the ideal strategy. Complete computer analysis now handles up to 10 x 10 Hex, but Hein's original 11 x 11 version probably offers complexity sufficient for decades more of vital play. The present volume covers history, variant forms, underlying mathematical ideas, information about exhaustive small-board strategies, and state-of-the-art computer play on full-sized (11 x 11 or 13 x 13) boards. More systematic but less up-to-date, Connections Games by Cameron Browne complements the current volume."
-D. V. Feldman, University of New Hampshire, CHOICE Reviews