The puzzle starts with two pieces in place at the edge of the puzzle. Two extra pieces are in as a bonus. Your aim is to fill in
some of the puzzle squares to create one continuous piece of track so that a train can travel from one edge square to the other
There are horizontal and vertical number clues showing how many pieces of track appear in each row or column.
It’s useful to put in an x if you are sure there is no track in that square. And there is an eraser to rub out mistakes
(which will happen even with the expert puzzler). If you put in a piece that doesn’t make sense
it will appear with a red background which means it needs checking. Lastly there is a blue Restart button to begin again.
Strategy
Again look first at the numbers. As you get each row and column correct the number clues will turn green, if you have filled too
many squares in a row or column the number clue will turn red. .
With this more difficult puzzle you will find the eraser a valuable tool!