Tetris. We've all played it, rotating the pieces and dropping them in the perfect place, or despairing as we discover a piece won't fit. You may have even joked about 'mastering' the game. But what about the people who've truly mastered Tetris? Where are the Kasparovs and Fischers, the great champions who've dedicated their minds to solving its deepest puzzles? Ecstasy of Order...