Picross DS review at GameAlmighty.

"The concept of Picross has been around since the 80s and most recently on the SNES in 2000 as Picross NP, so it seemed inevitable that a new version would finally arrive on the DS. For those not in the know, Picross DS is an odd hybrid of Minesweeper, crosswords and Sudoku that has never bothered pushing the limits of presentation, opting to keep things visually simple while delivering a challenging puzzle experience that will more often than not make your brain hurt.

Trying to explain the basic premise can be an exercise in futility, but here's a little run-down: Along the top and side of the puzzle are sets of numbers that represent clues as to how many blocks are represented in each row and column. So if a column has 2-1-2 at the top then you know it contains 2 consecutive blocks, followed by a single and 2 more blocks. By referencing the numbers given on the side of the puzzle, you can deduce the pattern you need to complete. Sure, it sounds boring as hell and for many of you, it probably isn't much fun. Picross is for the Sudoku crowd, not the Meteos group and you should be clear on that before entering the fray."

Full Source: GameAlmighty