Calculation Solitaire vs Killer Sudoku by Sudoku.com

CALCULATION SOLITAIRE is a challenging game that will keep you thinking. Like normal solitaire the objective is to move all cards onto the foundation, but unlike normal solitaire you don't build the foundation in-order (suits are ignored). Rather you step by a number with wrap around (modulo 13 for the mathies in the crowd). The first pile is built stepping by 1s. A 2 3 4 5 6 7 8 8 T J Q K The second pile is built stepping by 2s. 2 4 6 8 T Q A 3 5 7 9 J K The third pile is built stepping by 3s. 3 6 9 Q 2 5 8 J A 4 7 T K The fourth pile is built stepping by 4s. 4 8 Q 3 7 J 2 6 T A 5 9 K Sounds confusing, but we provide a helpful hint card which shows the progression so you know what is coming next and can plan to win the game... which you will need to do because it is very challenging. There are board columns where you can stash cards that don't yet go on the foundations. However cards on the board cannot be moved, unless they are promoted to the foundation. Totally free!! No in-app purchases. You can play an easier or a harder version plus a bonus game One234 where all the cards are laid out in a fan.

Enjoy an engaging Killer Sudoku experience! Jump into enhanced gameplay, solve tons of puzzles, train your brain, and have fun! Discover the new brain-training puzzle from the developer of Sudoku.com! Killer Sudoku by Sudoku.com is great for both beginners and advanced players. Although Killer Sudoku is harder than classic sudoku, we made it accessible for players of all skill levels. With its enhanced gameplay, it's easy to follow the game rules and become a sudoku master in no time. Explore Killer Sudoku and discover a refreshing take on the classic paper-and-pencil sudoku puzzle. What you get: * Killer Sudoku puzzles to expand your sudoku experience. * Thousands of levels to solve. * Daily challenges to win unique trophies. * Seasonal events to get unique medals. * Hints and notes to guide you when you get stuck. * Tons of gameplay to challenge your brain. * New game from a top developer! How to play: * Fill all rows, columns, and 3x3 regions with numbers exactly like classic sudoku. * Every cell is part of a cage, indicated by dotted lines. * Make sure the cells can be added up to the sum in the upper left corner of the cage. * The sum of all numbers of each 3x3 region, row or column always equals to 45. * Numbers cannot repeat within cages, a single row, column, or 3x3 region. Dive into the world of Killer Sudoku! Play anywhere, anytime!