Someone slipped one buggy card into the turtle's program, find it, fix it, and steer the turtle to the jewel.
The turtle follows a program made of instruction cards, but one card is wrong and sends it off course. Trace the intended path, click the card you think is buggy, and replace it with the correct instruction from the palette. Run the program to watch the turtle and confirm it now reaches the jewel.
Turtle Tracks teaches sequencing and reading code by hunting a single bad instruction, an approachable intro to debugging.
The turtle is Seymour Papert's. Logo put a relative cursor on a Cartesian plane and had children drive it with FORWARD and RIGHT, which turned geometry into something you instruct rather than memorise.
The original framing is debugging rather than authoring: the turtle's program already exists, one card in it is wrong, and your job is to trace the intended path and find which card sent it off course.
That is the harder and more useful half of programming, and the one Logo's designers cared most about. Papert's argument was that a wrong program is not a failure but a thing to be diagnosed — and a turtle is the ideal patient, because its mistake is drawn on the screen.
Turtle Tracks is an original debugging puzzle that teaches sequencing and reading code by hunting a single bad instruction. Play free in your browser with daily and practice puzzles across three difficulties.