Advanced Sudoku brings you another 75 of the best number puzzles in the world, as well as some more, original puzzles from the creators: Bridges, in which you must place bridges across a maze of islands and Slitherlink, where you have to fill in blocks to create a long, sweeping tunnel. All three puzzle types rely on logical thought and reasoning rather than general knowledge or brain power, making them suitable for all ages and abilities.
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Ash Hollow August Author's note bank Barlow Road Blue Bluff Boise bridge Bridger building built burial Butte camp campground Canyon Columbia River Converse County Dalles Devil's Gate diary emigrants encamped feet ford Fork Franzwa Fremont County Ghent Goldsborough Bruff Goshen County grave Green River Hall Henderson Hill Idaho Independence Rock Indians Irene James John July June Kansas landmark Laramie River manuscript map marked marker Massacre Mattes Merrill miles east miles south miles southwest miles west Mountains mouth Natrona County Nebr NEV4 North Platte River NWV4 OREGON TRAIL MONUMENT Osborne Cross Paden Paul Pioneer Pony Express Pony Express station Pritchard Raft Ranch ridge route SEV4 side Sir Richard Burton Snake River Soda Springs South Pass stage station stone stream Sudoku Sweetwater SWV4 Thomas Christy trading post travelers U.S. Highway U.S. Highway 26 USGS USGSmap Valley William Willow Wyoming yards