Features over 100 brand-new boggling brainteasers - the perfect gift for darts fans Dust off your darts and brush up your board with Target Practice , the ultimate darts puzzle book. You'll need wits as sharp as your arrows to solve these difficult and dastardly darting puzzles of numbers and logic. Trickier than a combination finish or a nine darter, are you prepared to take them on, score a champagne finish and hit the bullseye?.