Yut Nori rules and sources

Each rule shows what the sources say. Rules not in the sources are marked as ours.

Item	This app	What sources say
Pieces	Four per side	The Encyclopedia of Korean Culture says four pieces for each player or side.
Throws	Do 1, Gae 2, Geol 3, Yut 4, Mo 5	The same entry lists four sticks and these step counts.
Extra throw	Yut, Mo and captures	The same entry says Mo or Yut earns another throw, and so does a capture.
Capture	Captured pieces go back to waiting	The same entry says a captured piece restarts from the beginning.
Stacking	Your pieces on one point merge and move together	The same entry describes carrying the first piece on your back. Captured stacks going home whole follows a common rules summary.
Board	29 points	The same entry and Wikipedia both give 29 points.
Shortcut	Diagonals open only when you rest on a corner	The same entry says the route from Mo to the center is the shortest. The rest-on-the-corner condition follows a common rules summary.
Back-do	One step back	The National Folk Museum webzine lists Back-do as a variant. This app has it on.
Going home	Extra steps past the end are dropped	The same entry says the side whose four pieces exit first wins. Dropping spare steps follows a common rules summary. Exact-throw exit is not used.
Winning	First side with four pieces home	Same as the Encyclopedia of Korean Culture.

Rules we added

These are not in the sources. They are ours and not passed off as tradition.

Augments On your 1st, 6th and 12th turn pick one of three. Free.
First capture cushion Your first captured piece returns to point 1, not to waiting. If point 1 is blocked, it goes to waiting.
Truce Once per game, when a side has lost two pieces, the opponent cannot capture during its next turn.

All names and texts are our own. Once and twice mean uses per game.

Name	Slot	Effect
Head Start	opening augment	A piece entering the board moves one extra step.
Twin Entry	opening augment	Once: bring two waiting pieces in as one stack.
Do Echo	opening augment	Once: a Do gives you another throw.
No Backing	opening augment	A Back-do counts as a Do.
Walk Together	opening augment	Stacks move one extra step.
Mo Bonus	opening augment	Once: a Mo also gives you a Do.
Soft Mat	middle augment	One more first capture cushion.
Payback Throw	middle augment	Once: after you are captured, throw an extra time next turn.
Piggyback Dash	middle augment	A stack you just formed moves one extra step next.
Second Look	middle augment	Twice: rethrow a Do or Back-do.
Corner Cheer	middle augment	Once: stop on a corner and throw again.
Double Hunt	middle augment	Once: a capture gives two extra throws.
Low Threshold	finale augment	Go home even when one step short.
One Gust	finale augment	Once: a Do or Gae becomes a Geol.
Finish Cheer	finale augment	Twice: a piece going home gives an extra throw.
Iron Stack	finale augment	Stacks of three or more cannot be captured.
Comeback Wind	finale augment	Behind on pieces home: Do counts as Gae, Back-do as Do.
Yut Leap	finale augment	A Yut moves five steps.

The sources are silent here, so this app chose. We say so.

Stick odds Each stick is flat or round with equal odds. Sources give no odds, so we modeled fair sticks.
First player The game seed decides. Sources do not say how to pick.
Point numbers Start is 0, outer 1 to 19, inner 20 to 28. Numbers help the screen point at spots.
Back-do while waiting Waiting pieces cannot use it. Sources do not cover this case.
Back-do from point 1 The piece goes back to waiting. Sources do not cover this case.
Splitting stacks Stacks cannot be split. We found no source allowing it.

Yut rules vary by region and family. We chose one common ruleset and list every source below. Sources were read as summaries.