Span Atlas

Original uniquely solved5×5,7×7 and9×9 bridge puzzles. Join nearest visible orthogonal islands, satisfy each exact incident-bridge number, use at most two parallel bridges per pair, avoid crossings and connect the entire network. Direct click/tap/drag, standard keyboard, outside island/direction keypad, optional exclusion marks, zoom, English/PT Help and original synthesized audio. Solo has counted optional hints. Exact local2 uses hidden independent boards, private handoff and separate clocks. Exact online2/3/4 races a shared seeded challenge for eight minutes with rule-checked solutions and terminal agreement. Host-managed casual results are unverified; departure/background safely aborts. No reconnect or host migration.

Arrows/WASD move immediately; Shift+arrow cycles a bridge to the visible island. Click/tap gaps or Space cycles single/double/empty. Drag between visible orthogonal islands previews; release inside commits, cancel/outside discards. Native island/direction keypad;1 single,2 double,X/right-click/450ms touch exclusion,Delete clear,Enter separate check. Ctrl/Cmd+Z Undo; Ctrl/Cmd+Shift+Z or Ctrl+Y Redo. Esc closes Help then pauses/resumes solo/local; online Help stays live. M mute,R confirmed restart,H counted solo hint. Zoom,English/PT,exact local2 private handoff and online2/3/4 eight-minute same-challenge races; casual unverified. Portrait preferred; landscape works.