Hashi - logic puzzle game

[wayne]

A working model of a game I want to continue to develop

Hashi is a game with a given arrangement of numbered islands.
The goal is to bridge the islands so that:
1) They form a single connected group,
2) The number on each island tells how many bridges connect to that island,
3) There are at most two bridges between any pair of islands,
4) All bridges are placed horizontally or vertically, and never diagonally
5) A bridge never passes through an island
6) Bridges do not intersect.

The game works, and I have squashed most of the bugs. It no longer throws any errors when I use it, anyway.
Contains a few puzzles and an ini file to load a simple default puzzle.

Still needs a routine to determine when puzzle is solved
Also working a way to save progress