Lucky 21 blocks! - This is an exciting puzzle game with numbers. Drag the blocks onto the board so that, in the sum of the numbers, 21 are given in anBlack Jack 777y row or column. This is an exciting and fun combination of Sudoku-style puzzles. Try the endless mode to score as many points as possible! Or, challenge the adventure mode to develop your skills, puzzling over a huge number of dynamic puzzles!