StepWise
100+ data structures and algorithms, every step narrated with its pseudocode line and variables; step back, share as a link, embed in Canvas.
Apps / State Space Atlas
State Space Atlas
Every reachable state of Hanoi, sliding tiles, Klotski and Rush Hour, drawn as one graph.
What it does
Shows every possible position of a classic puzzle at once, laid out as a map colored by distance to the goal. It covers Towers of Hanoi, sliding tiles up to the 8-puzzle, Klotski and Rush Hour. Students step through breadth-first, depth-first, greedy and A* searches and compare how much each explores, then write their own estimate of distance to the goal in a few lines of code and see every state where it breaks the rules outlined on the map. Instructors can share a challenge link that judges a student's run.
Good to know
Puzzles are capped at 400,000 states, so larger ones such as the 15-puzzle are out of reach.
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