The coloured squares are the nodes which need to be
collected with continuous (edge to edge) bridges of the same colour. Dark
grey squares ("blocks") cannot be used. Clicking on a non-node, non-block
square will change its colour to the one specified in the drop-down menu on
the bottom of the page, or clear the square if it's already of the given
colour. Click the "Ready!" button when you think all nodes have been
connected, you will get the number of tiles you used to fulfill the task (or
a colour which hasn't been dealt with properly, if there is one).
You can
change the settings in the form on the left, the puzzle will only be reset
with those values once you click the "Make new puzzle" button. The puzzle
will be random, it may not have a solution at all, sorry; if you see a lot
of impossible puzzles being generated, try to decrease the number of
colours, nodes or blocks, or increase the size of the playing field.
If
you have any comments, suggestions, funny stories or just feel the need to
talk to somebody with affinity to mathematics and natural sciences in general
and algebraic or differential topology, especially fields connected to
singularity theory in particular, please do not hesitate to drop me a mail. A spam filter is
watching over this address, so please put any advice into the message body
and not the subject line.