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# MIT Mystery Hunt Puzzle Index: Keyword Data

## hashiwokakero

The standard form of this puzzle consists of a set of circled numbers aligned to a grid (which is not otherwise given). To solve it, add some horizontal or vertical "bridges" between the circled numbers such that the number of bridges terminating at each number is the same as that number. At most two bridges may extend in each direction from a number, and bridges never intersect or jump over numbers.

Also called: Bridges puzzle, hashi

**Puzzles**

MIT Mystery Hunt 2010 Round 11 Meta

MIT Mystery Hunt 2011 Nik-holey

MIT Mystery Hunt 2014 Magic Mushrooms

MIT Mystery Hunt 2015 Hashi It Out

MIT Mystery Hunt 2016 Toll Bridges

MIT Mystery Hunt 2017 Attention Span

MIT Mystery Hunt 2018 Hashiwokakero (Count Your Bridges)

MIT Mystery Hunt 2019 Schematics

MIT Mystery Hunt 2021 Better Bridges

MIT Mystery Hunt 2022 A Wizard of Earthsea

MIT Mystery Hunt 2022 Crooked Crossings

**Categories**

Nikoli-style logic

Puzzle Types

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