Solo

An intriguing puzzle game which will keep you hooked to your phone for hours

You have a square grid, which is divided into as many equally sized sub-blocks as the grid has rows. Each square must be filled in with a digit from 1 to the size of the grid, in such a way that

every row contains only one occurrence of each digit

every column contains only one occurrence of each digit

every block contains only one occurrence of each digit.

(optionally, by default off) each of the square's two main diagonals contains only one occurrence of each digit.

You are given some of the numbers as clues; your aim is to place the rest of the numbers correctly.

Under the default settings, the sub-blocks are square or rectangular. The default puzzle size is 3×3 (a 9×9 actual grid, divided into nine 3×3 blocks). You can also select sizes with rectangular blocks instead of square ones, such as 2×3 (a 6×6 grid divided into six 3×2 blocks). Alternatively, you can select ‘jigsaw’ mode, in which the sub-blocks are arbitrary shapes which differ between individual puzzles.

Another available mode is ‘killer’. In this mode, clues are not given in the form of filled-in squares; instead, the grid is divided into ‘cages’ by coloured lines, and for each cage the game tells you what the sum of all the digits in that cage should be. Also, no digit may appear more than once within a cage, even if the cage crosses the boundaries of existing regions.

If you select a puzzle size which requires more than 9 digits, the additional digits will be letters of the alphabet. For example, if you select 3×4 then the digits which go in your grid will be 1 to 9, plus ‘a’, ‘b’ and ‘c’. This cannot be selected for killer puzzles.

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This app is integrated with Alphonso software. Subject to your permission, the Alphonso software receives short duration audio samples from the microphone on your device. The audio samples never leave your device, but are irreversibly encoded (hashed) into digital "fingerprints." The fingerprints are compared off-device to commercial content (e.g., TV, OTT programming, ads music etc.). If a match is found, then appropriate recommendation for content or ads may be delivered to your mobile device. The Alphonso software only matches against known audio content and does not recognize or understand human conversations or other sounds.