Speed run — answer fast, score 0
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TAP AN ANSWER
Pick a lesson. Start at zero.
Each lesson walks you by the hand in its own way: read a little, run real Go, spot broken lines, fix real bugs, drag lines into order, build programs from parts — decoys included. Nothing is graded. You cannot lose lives here.
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YOUR TURN — EDIT & RUN
GOAL OUTPUT — make yours match exactly
PREDICT FIRST — Run unlocks when you call it
Press Run to compile your code.
DRAG — OR JUST TAP — LINES INTO ORDER
YOUR PROGRAM
QUICK CHECK — wrong picks cost nothing
WATCH IT WORK — step through to the end
TAP THE BROKEN LINE — wrong taps cost nothing
PICK THE RIGHT LINES, IN ORDER — decoys included
YOUR BUILD
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CLICK THE BUGGY LINE
Build it yourself, one step at a time.
No single-line puzzles here. Each project is a small real program you assemble across steps: read the plan, write the pieces, fix the bugs, run the whole thing. Nothing is graded. You cannot lose lives here.
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YOUR TURN — EDIT & RUN
GOAL OUTPUT — make yours match exactly
PREDICT FIRST — Run unlocks when you call it
Press Run to compile your code.
DRAG — OR JUST TAP — LINES INTO ORDER
YOUR PROGRAM
QUICK CHECK — wrong picks cost nothing
WATCH IT WORK — step through to the end
TAP THE BROKEN LINE — wrong taps cost nothing
PICK THE RIGHT LINES, IN ORDER — decoys included
YOUR BUILD
Think like an algorithm.
Each algorithm gets the full treatment: the idea in plain words, the code built piece by piece, the classic bugs sprung on you, then a solve step where you prove it. Nothing is graded. You cannot lose lives here.
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YOUR TURN — EDIT & RUN
GOAL OUTPUT — make yours match exactly
PREDICT FIRST — Run unlocks when you call it
Press Run to compile your code.
DRAG — OR JUST TAP — LINES INTO ORDER
YOUR PROGRAM
QUICK CHECK — wrong picks cost nothing
WATCH IT WORK — step through to the end
TAP THE BROKEN LINE — wrong taps cost nothing
PICK THE RIGHT LINES, IN ORDER — decoys included
YOUR BUILD
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TAP LINES IN EXECUTION ORDER
YOUR ASSEMBLY
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