Bridgework

Bridgework is the puzzle usually called Bridges, or Hashiwokakero. A scatter of numbered islands sits on a grid, and you join them with bridges running straight along rows and columns. Each island needs exactly as many bridge-ends as its number, no two islands may be joined by more than two bridges, bridges never cross, and when you're finished every island must belong to one single connected network.

What sets this apart is what happens before you ever see a board: each one is dealt, then checked twice — once to prove exactly one arrangement of bridges satisfies it, and again to prove a human solver can actually reach that arrangement using pure logic, no guessing. Boards that fail either test are thrown away.

Easy and Medium boards are settled by counting alone; Hard and Expert require you to assume something, follow it until it breaks, and rule it out. Grids run from seven squares up to fifteen, with over forty islands on the biggest ones. Hint tells you the next forced bridge and why it's forced — not just where to click. A new crossing arrives daily, gentle on Monday, expert on Sunday.

To learn more or to find out how to play, visit:

https://tinyurl.com/2zbpyma8