Question: Which strategy board game, Twilight Imperium or Focus, appears in Sackson's "A Gamut of Games"?

full_context: Document 1: Summit (game): Summit is a Cold War board wargame introduced in 1961 by Milton Bradley as "The Top Level Game of Global Strategy", with an updated release in 1971. Each player chooses one of the major powers from the 1950s/1960s era and controlled their economic and military buildup during each turn, much like Risk.
Document 2: Hex (board game): Hex is a strategy board game for two players played on a hexagonal grid, theoretically of any size and several possible shapes, but traditionally as an 11×11 rhombus. Players alternate placing markers or stones (Go stones make ideal playing pieces) on unoccupied spaces in an attempt to link their opposite sides of the board in an unbroken chain. One player must win; there are no draws. The game has deep strategy, sharp tactics and a profound mathematical underpinning related to the Brouwer fixed-point theorem. It was invented in the 1940s independently by two mathematicians, Piet Hein and John Nash. The game was first marketed as a board game in Denmark under the name Con-tac-tix, and Parker Brothers marketed a version of it in 1952 called Hex; they are no longer in production. Hex can also be played with paper and pencil on hexagonally ruled graph paper.
Document 3: Twilight Imperium: The Role-Playing Game: Twilight Imperium: The Role-Playing Game is a role-playing game published by Fantasy Flight Games in 1999.
Document 4: Mag Blast: Mag Blast is a spaceship-themed strategy card game, produced by gaming company Fantasy Flight Games. The first edition was set in the universe of "Twilight Imperium", a board game made by the same company. The game is playable for 2-8 players, and is described as "a game of screaming space battles"
Document 5: Death Stacks: Death Stacks is an abstract strategy board game for two players invented by Stephen Euin Cobb. "Death Stacks" can be classified as a variant of the game "Focus" by Sid Sackson, published in "A Gamut of Games".
Document 6: Star Wars Roleplaying Game (Fantasy Flight Games): The Star Wars Roleplaying Game is a tabletop role-playing game set in the "Star Wars" universe first published by Fantasy Flight Games in August 2012. It consists of three different standalone games, each one conceived to play a particular type of character:
Document 7: Carcassonne (board game): Carcassonne is a tile-based German-style board game for two to five players, designed by Klaus-Jürgen Wrede and published in 2000 by Hans im Glück in German and by Rio Grande Games (until 2012) and Z-Man Games (currently) in English. It received the Spiel des Jahres and the Deutscher Spiele Preis awards in 2001.
Document 8: Shattered Empire: Shattered Empire is the first expansion to the board game "Twilight Imperium", both of which were designed and published by gaming company Fantasy Flight Games. It was released in December 2006.
Document 9: Blue and Gray (board game): Blue and Gray is an strategy board game for two players invented by Henry Busch and Arthur Jaeger in 1903. They obtained a patent for the game, but may never have published it. Blue and Gray was featured in the book "A Gamut of Games" (1969) by Sid Sackson. It was also featured in "The Book of Classic Board Games" (1991) by Klutz Press under the name Cats and Dogs. In this book, the game was ranked among the top 15 board games of all time, including checkers, backgammon, Go, and mancala. The game is also known as Wild West, Thumps Game, and Captain and Soldiers. The name Blue and Gray "refers to the uniforms of the South and the North in the Civil War and in the original game the playing pieces of the contestants were of those colors."
Document 10: Twilight Struggle: Twilight Struggle: The Cold War, 1945–1989 is a card-driven strategy game for two players, with its theme taken from the Cold War. One player plays the United States (US), and the other plays the Soviet Union (USSR). The game takes its title from John F. Kennedy's inaugural address:
Document 11: Focus (board game): Focus is an abstract strategy board game, designed by Sid Sackson and first published in 1964 by Kosmos. The game has been re-published many times since, sometimes under the titles "Domination" or "Dominio". "Focus" won the 1981 Spiel des Jahres and Essen Feather awards. The game appears in Sackson's "A Gamut of Games" in the section "New Battles on an Old Battlefield".
Document 12: Shards of the Throne: Shards of the Throne is the second expansion to the board game Twilight Imperium, both of which were designed and published by gaming company Fantasy Flight Games. It was released in May 2011.
Document 13: Titan (game): Titan is a fantasy board game for two to six players, designed by Jason B. McAllister and David A. Trampier. It was first published in 1980 by Gorgonstar, a small company created by the designers. Soon afterward, the rights were licensed to Avalon Hill, which made several minor revisions and published the game for many years. "Titan" went out of print in 1998, when Avalon Hill was sold and ceased operations. A new edition of "Titan", with artwork by Kurt Miller and Mike Doyle and produced by Canadian publisher Valley Games became available in late 2008. The Valley Games edition was adapted to the Apple iPad and released on December 21, 2011.
Document 14: A Gamut of Games: A Gamut of Games is an innovative book of games written by Sid Sackson and first published in 1969. It contains rules for a large number of paper and pencil, card, and board games. Many of the games in the book had never before been published. It is considered by many to be an essential text for anyone interested in abstract strategy games, and a number of the rules were later expanded into full-fledged published board games.
Document 15: Twilight Imperium: Twilight Imperium is a strategy board game produced by Fantasy Flight Games. It was designed by Christian T. Petersen and was first released in 1998. The game is in its third edition (2005), which has large changes over previous editions. This edition also has two expansions – "Shattered Empire" released in 2006, and "Shards of the Throne" released in 2011. It is known for the length of its gameplay (typically greater than 6 hours), and its in-depth strategy (including military, political, technological and trade).
ground_truth: Focus