5 Daily Puzzles vs Str8ts Solver

Solve Sudoku, Str8ts, Killer Sudoku, Jigsaw Sudoku and Kakuro on your iPad with these daily puzzles from Andrew Stuart and Jeff Widderich. These puzzles will suit beginners to experts because within each puzzle are four grades - making a total of twenty puzzles available. Every day you can request a new set of each puzzle (use the "New" button on each player) or you can keep working on the current puzzles. Progress is always saved for each puzzle. Leave or quit the app at any time and come back to an unfinished puzzle. There is a full undo/redo and you can check your progress if you are stuck. We're very proud of these puzzles - they come from the same stock we regularly send for print in newspapers around the world so we know pretty quickly if we're not producing the best puzzles. We have been making classic puzzles since 2005 and Str8ts since 2008 and hundreds of solvers have helped us hone the logical strategies we use to make them. Because we use logic to make and grade them we are very confident of the grade spectrum they have been placed on and we can also say that the different between the easiest and the hardest should be very noticeable. So whether you are a novice or a pro there is a puzzle to match your skill. We absolutely guarantee a single solution and theoretically you should never need to guess. Because of the strategy logic we use, even the hardest puzzles have a logical pathway to the end, although it might be obscure to say the least. If you want to check the puzzles or are stuck, we have Sudoku solvers at www.sudokuwiki.org and a Str8ts solver at www.str8ts.com. In fact you can find a wealth of information about us, the puzzles and tips and strategies at these two websites.

Jeff Widderich had the idea for Str8ts in 2008. Together with Andrew Stuart, he developed a new puzzle that is a successful successor to Sudoku. It is a puzzle where you have to enter the numbers 1 to 9 in the fields, where each digit may occur only once per line and column. With the app you can daily download new puzzles and solve them for free. There are puzzles in different difficulty levels, so that everyone will find something for their level of knowledge. If you can not find a solution, the integrated solver helps to find the next steps. The integrated solver is able to solve even the most extreme str8ts puzzles with a backtracking algorithm. So far, we've only found two puzzles where the one-step backtracking algorithm did not find a solution and needed support from the user. As a further function, you can even enter puzzles, which are available for example in printed form, by hand. An import via a text format is also possible. We thank Jeff Widderich and Andrew Stuart, who gave us permission to use the name "Str8ts". A highlight, of course, is the link from Andrew, through which he daily provides us with new puzzles for the app.