Double in

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Double in is a game variant that adds an extra layer of challenge right from the start. Before you can begin scoring, you must hit a double. Until you do, every dart you throw is essentially wasted — it doesn't count toward your score. This can be incredibly frustrating, especially for newer players who struggle with doubles. The double-in rule is most commonly found in 301 rather than 501. The logic is that 301 is a shorter game, so requiring a double to start adds length and difficulty. Without double-in, a strong player could potentially finish 301 in very few darts, making the game feel too quick. In practice, double-in changes your strategy from the very first dart. Instead of automatically aiming at treble 20, you need to decide which double to target. Many players go for D20 (double top) since it's a familiar target, but some prefer D16 or even the bull. The key is to get "in" as quickly as possible — every visit spent trying to double in is a visit your opponent might already be scoring. Double-in has fallen out of favor in professional and most competitive darts, where straight-in (scoring begins immediately) is the standard. However, it remains popular in certain pub leagues, particularly in Britain and some European countries. It adds a tactical dimension: do you practice doubles to get in quickly, or focus on scoring and hope for the best? For casual play, double-in can actually be good practice. It forces you to hit doubles under pressure from the very start of the game, which is great training for checkout situations.