Circuit Board

How to Play

• Everyone gets the same 35×15 dual-layer board every day. It resets at 00:00 UTC, for everyone, at once.
• The board has two overlapping copper layers, Layer A (top) and Layer B (bottom), occupying the same footprint. You only see and walk one layer at a time.
• Vias are the cyan-ringed junctions that connect the same spot on both layers. Stand on one and press F or tap the flip button to drop straight through to the other layer.
• Some junctions are logic gates — shown as a locked red bar across a trace. A gate stays sealed until its matching switch (or, on harder days, both of its switches) has been soldered.
• Walk over a switch pad to solder it permanently — it lights up gold and stays active for the rest of the run. Switches are always reachable without needing to cross a gate first.
• Traces you've already walked stay lit gold behind you, so the board reads as a circuit you're actively powering up.
• The exit sits on the opposite layer from where you start, so at least one via crossing is required every day.
• More gates appear as the week goes on, and from midweek onward some gates need two switches soldered instead of one. Move with arrow keys on desktop, or swipe on mobile.