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

Product Information

want to be in our path. If we have reached the target coverage, and are on the puzzle boundary, we will call

empty cells, and subtract that from the length of that row/column. If this number matches the clue for that 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). Connect and sever railways across the world to help everyone reach their homes and solve over 240 clever puzzles ranging from gentle slopes to twisted passageways. 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. We insert a '?' for any cells implied by the clues. For each row/column we will count the number of

In the last year or so a puzzle has been appearing in 'The Guardian' (a UK newspaper). It looks like this: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 The solver is always the starting point for any type of puzzle - without a solver you won't be able to write a 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?) of a puzzle. In this situation somebody solving a puzzle will be able to just 'see' the solution, without

this our exit. If our path hits a dead-end and can't move forward any further, we start again from a blank Just for the heads up, your first generated grid has another solution where some different squares are used or left empty: imgur.com/a/jEbRPmxat a cell on the puzzle boundary. We have a minimum target 'coverage', i.e. the minimum number of cells we

needing to use any particular solving technique. With this in mind, we only apply this technique when thereWe 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