WPF SUDOKU GRAND PRIX 2013

Round 6 will take place at http://wpc.puzzles.com/ussq2013/ You must register to participate.

Do you know if you have to print it or if you can solve it beautifully right there? (I haven't bothered to look into it.)

Results: http://wpc.puzzles.com/ussq2013/results.asp?mode=intl It seems that the number of participants is starting to decrease slightly from what it was at the beginning.

You can practice before the next stage this weekend :) http://www.logic-masters.de/Wettbewerbe/details.php?id=57

You can still practice before the next stage:) http://logicmastersindia.com/BeginnersSudoku/ You can also solve online...

The 7th round is organized by Turkey. The competition will take place on the LogicmastersIndia website: http://logicmastersindia.com/2013/06S/ The competition will take place from June 22nd to June 24th. It is likely that the whole day will be solved on the 24th. If it turns out otherwise, I will definitely let you know here in good time. The competition guidelines are also available: http://www.worldpuzzle.org/files/35/WPF_Sudoku_GP_2013_Turkish_Leg_IB.pdf Good luck solving! I will also give my recommendation on what to solve first and what not to solve, so that it is easier to make a choice. Since I have solved most of them myself, I can probably assess the difficulty of the task and what surprises it may offer. It is definitely worth trying (You choose in which order, but I also tried to put some normal order by difficulty): 1-4. Classic 11. Sudoku Islands (Count how many cells there are in a row and column, and start solving. Remember the rule that each island has each number exactly 2 times!!!) 15. Odd Lab (It is advisable to color the upper and lower corners yellow with a thick felt-tip pen and also color all the odd numbers that are connected to them yellow. This is a good way to get an overview and it is probably a very easy sudoku) 8. A or B (You have to start solving from the beginning and at some point somewhere an unsolvable situation arises regarding one of the rules) 10. Sudoku Clock (The first number can only be 1 or 2, and the first of the second number can be between 1-5) 13. Just two cells sudoku (You have to find 2 numbers by solving logically. You cannot try and if 2 nr. found, then the task is complete) 14. Halved squares sudoku (Solved like a special shape, but it is important that one of the halved squares is always empty, the other has a number. Tip: There is often a situation where, for example, 3 numbers are missing in one area and there are also 3 empty squares, then all the triangles in this area can be colored.) You could avoid these for now, but if you feel good, then it is also worth trying (PS. I didn't try to rank them in order of difficulty): 5. One digit unique solution (It's possible that most of them are easy to solve and there are a couple of options in the final phase, one of which leaves a unique solution, the rest a double solution) 6. Top heavy sudoku (Actually a simple sudoku, you just have to make sure that if the numbers are directly next to each other, the bottom one cannot be bigger. What makes it difficult is that it's very easy to make a mistake) 7. Tripod sudoku (You have to start solving from the edges, you can draw the places with dots right away, where there is no dot, you can't draw a line there and these squares must be connected. Make sure that the four lines don't meet anywhere) 12. Snail sudoku (Be sure to mark the cells where there can't be any numbers. If you do that, it's completely solvable) The following are not recommended solve for those who have no experience, but at the same time it's not too bad: 16. Searchdoku (You have to start with longer words and search for the beginnings and ends of the word from the given letters. Some longer words will automatically run into the sudoku and provide a solution. Words where some letters are repeated are also useful. They must be placed diagonally or along the letters that are outside the sudoku) 17. Snapshot sudoku (A placement task, you have to find a variant that fits and solve the sudoku. It can be quite difficult to find it, but it can also be very easy) 18. Scale sudoku (A good indication is the scales, where the smaller area outweighs the larger one. You have to do a little math) 20. Irregular Sudoku Bands (It is important to remember that the shapes remain the same. You have to start breeding from the places of the given numbers) The following are not recommended unless everything else has been done: 6. Logidoku (A lot of math. You probably have to start eliminating numbers using equations first. It is important to find the operations that give the first numbers at the beginning. Most of them probably do not give anything useful at the beginning) 19. Psycho Killer (A very unpleasant sudoku. To solve it correctly and quickly, you need good experience in solving killer sudoku) 21. Sudoku Blocks (I can't imagine how difficult it can be. I have no experience in solving it. I'll probably leave it for last. You probably have to start placing it in order, and if it doesn't work, try other variants until you finally have the solution) Hopefully this helps. Since these are relatively extreme variants, I thought I'd give a few tips to encourage participation.

If you still want to try Psycho Killer, please note that the instructions contain an incorrect problem because: 1. the solution contains repeated numbers in the boxes 2. the lower right number should be 4 3. the box with a thicker line is not shown on the given grid. A correct example can be found at this link: http://www.logic-masters.de/Raetselportal/Raetsel/zeigen.php?id=000064 In addition to the solution, there are some other variants: Tripod Sudoku http://www.funwithpuzzles.com/search/label/Tripod Sudoku?max-results=3 Psycho Killer http://www.funwithpuzzles.com/search/label/Psycho Killer?max-results=3 Snail Sudoku http://www.funwithpuzzles.com/2010/05/snail-sudoku.html

Online solving is not allowed in this competition. Apparently because it is difficult to formalize such non-classical alternatives for online solving, where some kind of action (coloring squares, drawing lines) is often expected in addition to writing numbers when solving Sudoku.

The guide for the 8th round, which will take place in a week, is also out. The competition will once again take place on the logicmastersindia page. http://logicmastersindia.com/2013/06S2/ More details will probably be available once the 7th round is over.