Large (Advanced) Hashi Puzzles
15×15 gridA full-scale challenge for experienced Hashi solvers
Large puzzles unfold across a 15×15 grid with 24 to 36 islands — complex enough to require sustained multi-step reasoning but always solvable by pure logic, no guessing required. These are the puzzles that Hashi veterans come back for: the board has real geography, clusters of islands that interact across distance, and a satisfying weight to each deduction. Expect to spend meaningful time with a large puzzle. The payoff when it resolves is proportional.
Grid size
15×15
Islands per puzzle
24–36
Typical solve time
20–45 minutes
Puzzles available
600
Who this is for: Experienced Hashi players looking for a serious challenge, or anyone who enjoys puzzles that reward patient, methodical thinking.
Tips for Large Puzzles
- Divide the board visually into regions. Solve the densely connected clusters first, then work outward — large grids become manageable in sections.
- Double bridges are especially constraining on large grids. A double bridge block eliminates crossing candidates across a wide stretch of board.
- When stuck, revisit connectivity: temporarily assume a group of islands forms an isolated sub-network and ask whether the numbers add up. If not, the bridges must reach outside that group.
Easy Large Puzzles
Medium Large Puzzles
Hard Large Puzzles
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