Tidewell · a Waterways course, v2 · selective attention
read the vent, filter the false cues, lead the current to the one true bed · all signals simulated
Read the vent's mark, then guide the current to the ONE bed that matches it.
Focus signal (simulated) · your calm line
settling in
Puzzle
1
Target
searching
Decoy errors
0
False-cue resist
100%
Calm time
0%
Correction
0%
Designer / test controls
The focus value is a simulation of an EEG-derived estimate. It shapes light and sound only and never changes the puzzle. Keyboard: arrow keys move, Space or Enter turns.
Tidewell
The vent above shows a single mark. Every bed below is a real, connectable sink, but only the bed carrying that same mark is the true one. Tap the carved stones to turn their channels, read the marks before you commit, and guide the current there. Drifting fish will flash a decoy bed now and then, as if it were the one — hold the true cue and let the flash pass. Water into the wrong bed seals it, quietly, for this puzzle. There is no timer and nothing else can break.
First we take a short calm baseline, then your steadiness sets a personal line. Staying above it warms the world and quickens the water. The focus signal is simulated here for testing; in the product it comes from an EEG headband and never touches the puzzle itself.
What's new for L2 (selective attention), on top of the shared engine: every puzzle now has 2–4 real, connectable beds, each carrying a distinct shape (diamond, chevron, triangle, or ring — colorblind-safe by design), and the vent at the spring shows the one mark that counts. Routing water into a bed that doesn't match seals it for the rest of that puzzle — a quiet cross, no drama, just one less option. Drifting fish periodically flash a decoy as if it were the target; the filter has to stay active the whole time, not just at a single glance. New tracked signals: decoy-error count, false-cue resistance (did a flash actually pull a wrong turn, or did it pass), and a correction score comparing your actual taps to the minimum the puzzle needed. Everything carried over from L1 — the calm baseline, the focus signal as a secondary, never-gating layer, calm time, keyboard play, reduced motion — works exactly the same here.