Each square is an "isle," & the number is how many bridges touch it.
Bridges don't cross & must connect 2 isles.
If two isles connect by just 1 bridge, select the dotted one.
Once all of an isle's bridges are built, click on it to mark it complete.
When done, all isles interconnect.
Only 1 solution exists; no guessing needed.
Be careful! Avoid bridge intersections, as you might click the wrong bridge.
Marking decoys may help.
Walkthrough in Source link.
Letters appearing in the puzzle grid are part of the LogicFest Puzzle Suite and may be disregarded by those not trying to complete the Puzzle Suite.
If you need a hint on how to find the hidden word(s), play the Wednesday LogicFest game (use the playlist below, or the Also Try link above) and type Hint38 in any of the Hidden Word boxes. This quiz can also be used to verify the Hidden Words you have found.
In order to create a playlist on Sporcle, you need to verify the email address you used during registration. Go to your Sporcle Settings to finish the process.