EntityQ4966324· pop 6· linked from 2 articlesbridge and torch problemSign in to savelogic puzzleConnectionsInternational Standard Book NumberEntityprogramming languageEntityWayback MachineEntitygraph theoryEntitytorchEntityDaniel DennettEntityOregon State UniversityEntitylogic puzzleEntityriver crossing puzzleEntitysearch problemEntityCategoriesCombinatorial optimizationLogic puzzles