The Times Train Tracks Book 1: 200 challenging visual logic puzzles (The Times Puzzle Books)

Product Information

In the last year or so a puzzle has been appearing in 'The Guardian' (a UK newspaper). It looks like this:

We insert a '?' for any cells implied by the clues. For each row/column we will count the number of We don't like taking this 'brute force' approach to solving any type of puzzle, but sometimes it is the only Look for completed rows and columns. If we find a completed row/column, we will insert a 'X' for all other computation time (by a long way) is the final step. This means it's not as wasteful as it might seem at first glance. the row or column. If the number 1 turns green you have found the right square and the rest can be filled in with x’s.

System Requirements

We always start with a solver. We try to make our solver so that it solves puzzles in the same way as a human solver a) is there indeed a unique solution, given only the entry and exit points and the row/column totals? (or is there a flaw in my programming/ randomisation?) BEND RAILS TO MAKE THE TRAIN GO ‘CHOO-CHOO’Place, remove and reroute connections so that carriages safely connect to the locomotive. But, be careful and don’t make them run into each other! 240+ PUZZLES TO COMPLETEOur main levels will take you through a variety of locations at a relaxed pace. Forks along the road will lead you to spicy brainteasers that’ll please even the most demanding players!

If there is one unfilled cell left in a row or column at the edge of the unsolved part of the puzzle at some point, it must be adjacent to a filled segment (the rows/columns with the starting and ending points could be the exceptions).of a puzzle. In this situation somebody solving a puzzle will be able to just 'see' the solution, without