Yut Nori Guide

Yut Nori: Why It Brings the Whole Family Back to the Table

Yut Nori is Korea's signature traditional board game: throw four wooden sticks, move your tokens by the result, and race to bring all four of your mal home before your opponent does. It's one of the few games an entire family can genuinely enjoy together on a holiday like Lunar New Year, and there's a real reason for that. The luck of the throw and the strategy of choosing which token to move blend together so well that age or skill gaps rarely decide the outcome on their own. Omokboard's Yut Nori implements the standard board in full: the outer path, the diagonal shortcuts through the center, and both capturing and stacking.

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The Throw: Do, Gae, Geol, Yut, Mo, Backdo

Throw four sticks, and however many land flat-side up decides your result.

• Do (1): move 1 space (1 flat side up)
• Gae (2): move 2 spaces (2 flat)
• Geol (3): move 3 spaces (3 flat)
• Yut (4): move 4 spaces, then throw again (4 flat)
• Mo (5): move 5 spaces, then throw again (0 flat)
• Backdo: a rare result that sends one of your mal already on the board back one space. If you have no mal on the board yet, this result can't be used.

Rolling Yut or Mo earns you another throw, so a lucky turn can stack up several moves in a row. You don't have to use a result the instant you roll it. Collect your results first, then assign each one to whichever mal you choose.

Moving & Finishing

• Each player starts with four mal.
• Pick a result and move a mal that many spaces along the outer path.
• A mal that travels all the way around and back past the starting point finishes.
• Whoever gets all four mal home first wins.

Shortcuts: A Faster Path That Only Opens With a Precise Landing

The diagonal shortcuts crossing the center of the board aren't available whenever you like. A mal only unlocks the shortcut on its next move if it lands exactly on a corner space. Riding the path through the center can save you a lot of ground compared to looping all the way around the outside, which is exactly why landing precisely matters so much strategically. Overshoot the corner even slightly, though, and you miss the shortcut entirely and go back to the long way around.

Capturing: The Most Reliable Way to Set an Opponent Back

If your mal lands on a space occupied by an opponent's mal, you capture it and send it all the way back to the start. That alone is a big swing, since it erases however far they'd already traveled, and capturing also earns you a bonus throw. Hunting down spaces where opponent mal are clustered is the core offensive move in Yut Nori, and just as importantly, keep an eye on whether your own mal are sitting somewhere vulnerable to the same thing.

Stacking: Faster, but Riskier

If your mal lands on a space already holding another of your own mal, the two stack together and move as one unit from then on. It's efficient, letting you advance multiple mal in a single move. But if that stack gets captured, you lose all of them at once. Weigh the safety of the path against that risk each time before deciding whether to stack.

How Often Each Result Comes Up on Omokboard

Real yut sticks vary a little with their shape and how they're thrown, but Omokboard treats each stick as a fair 50/50 flip. Backdo works by marking one of the four sticks: it comes up when exactly one flat side lands up and it's the marked stick, the same way real sets mark a Backdo stick. That gives these odds for each throw:

• Gae: 37.5%, the most common result.
• Geol: 25%
• Do: 18.75%
• Yut, Mo, and Backdo: 6.25% each, about one throw in sixteen.

A single throw moves you about 2.2 spaces on average. The chance of rolling Yut or Mo and earning another throw is 12.5% combined, about one in eight, which is rarer than it feels.

Those numbers give you a tip you can use right away. Looking at a single throw, your mal is most likely to be captured when it sits two spaces ahead of an opponent's mal (37.5%), then three spaces ahead (25%), then one space ahead (18.75%). Four or five spaces ahead, the opponent needs a Yut or Mo, so you're much safer there. When you get to choose where a mal stops, avoid the spots two or three spaces in front of an opponent.

In online games, neither player's screen throws the sticks. The server throws them and sends the same result to both players, so neither side can see it in advance or change it.

Winning Strategy

Prioritize captures whenever you get the chance. A capture sends your opponent back to start and earns you an extra throw, so you win twice over.

Don't dump every result on one mal. Distribute them to fit the situation. Big results (Yut, Mo) are usually best spent on a mal still far from home, while small results (Do) work well finishing off a mal that's almost there.

Think carefully before stacking. It's fast, but costly if captured, so save it for stretches of the board where the capture risk is genuinely low.

Don't panic when you roll Backdo. If one of your mal on the board is about to be within an opponent's capturing range, moving it back one space can sometimes be exactly the escape you need.

How Omokboard's Yut Nori AI Plays

In AI games you play Red and go first, and the AI plays Blue. The AI keeps throwing while it rolls Yut or Mo, collects all its results, and then uses them one at a time to move its mal.

• Easy picks a random pairing of result and mal. It sometimes walks right past a mal it could have captured.
• Normal plays whatever looks best right now, scoring finishing highest, then capturing, then moving far. It doesn't check whether you could capture that mal on your next turn.
• Hard evaluates the whole board after each candidate move. It measures real distance to home with the shortcuts included, so it values landing exactly on a corner or the center, and it calculates the chance that your next single throw captures one of its mal. The odds from above (37.5% two spaces ahead, 25% three spaces ahead) feed straight into it, and since a captured stack loses several mal at once, it treats stacks with extra care.

In 4,000-game AI-vs-AI matches, Hard beats Normal about 70% of the time and Normal beats Easy about 78% of the time. Yut Nori leans heavily on luck, so even the Hard AI doesn't win every game. Hard has its limits too: it only considers your next single throw, not the extra throws that follow a Yut or Mo.

FAQ

• What if I keep rolling Yut or Mo? Every one earns another throw, so a lucky streak can advance you dramatically in a single turn.
• Are shortcuts automatic? A mal that lands exactly on a corner or the center takes the shortcut on its very next move.
• Can a stack of mal be captured together? Yes. Capturing a stack sends every mal in it back to the start at once.
• What happens when I roll Backdo? One of your mal already on the board moves back one space. If you have no mal on the board yet, this result can't be used. You'll move a different mal instead, or your turn passes if nothing else is available.
• Is Backdo always a loss? Not necessarily. If one of your mal is sitting right where an opponent could capture it next, retreating one space with Backdo can actually be a defensive move that saves it.