How to play:

  1. Touch & Mouse controls: Click or tap one island, then click/tap a neighboring island to toggle bridges (0 → 1 → 2 → 0).

  2. Rule enforcement: Bridges cannot jump over other islands or cross existing perpendicular bridges.

  3. Visual cues: Islands change color when their exact bridge requirement is satisfied, and warn if over-connected.

  4. Win verification: Automatically checks that all island numbers are met and that all islands form a single connected network.

Hashiwokakero (Bridges)

Connect islands orthogonally with 1 or 2 bridges. All islands must form a single connected network.

Connect all islands into a single network!

The Prototype Test Schedule

Your engineering team has five prototypes and five consecutive test slots. Use the clues to figure out which prototype is tested at each time.

Design notes

  1. The Glider is tested before the Bridge.
  2. The Bridge is tested before the 12:00 slot.
  3. The Rover is tested immediately after the Bridge.
  4. The Turbine is tested before the Bridge.
  5. The Turbine is not tested in the first or last slot.
  6. The Helmet is tested after the Turbine.

Your schedule

Prototype Test time
Bridge
Rover
Turbine
Helmet
Glider