A made Nil is a 100-point swing. A missed Nil is a 100-point swing in the wrong direction. When you call it, the entire table becomes your opponent — including, indirectly, your own partner. This is the single most consequential bid in JJDD.
What a Nil hand looks like
A Nil hand is a hand full of low cards with no obvious winners. Best case: no spades higher than a 5, no non-trump Aces, no Kings you'll be forced to lead. You want an escape route for every card in your hand.
A void or singleton in a suit is a red flag — if opponents lead a suit you're short in, they'll try to make you cut and take a book. Long weak suits are ideal because you can always duck under whatever's led.
When to call it
Call Nil when your hand has zero cards that reliably take a book. If you have to squint to talk yourself into it, don't. Missed Nils are game-losers.
Call it when your team is behind and you need a big swing to catch up. Call it less when you're ahead — Nil failure hands the game to opponents. The scoreboard should shape the risk.
Surviving the hand
Duck everything. When a suit is led, play the lowest card you have in it. When you have to lead, lead your highest card in your longest suit — the one most likely to be covered by someone else at the table.
Watch for the setup: opponents will try to lead suits where they think you'll be forced to cut. If you have a Power 2 or an Ace you're stuck with, get rid of it early on a book someone else will take. And trust your partner — a good partner covering a Nil is worth more than any strategy you can play alone.
