Deconstructing HCE

An interactive flow chart

Created by Salvatore La Terra

Start

Judge!

There's a problem in a game that involves cards moved around illegally. Are the problematic cards still separated from the others?

YES

NO

The infraction is a Looking Extra Cards, the penalty is a Warning.

Shuffle the cards illegally looked at in the random portion of the library and move on.

Did the cards move from a hidden zone to another hidden zone?

(Take into account cards previously revealed to the opponent or in a unique position when evaluating this.)

YES

NO

The infraction is a Game Rule Violation, the penalty is a Warning.

If you can apply a simple backup, do so. Otherwise, check if one of the codified partial fixes is appliable. If it is, apply it and move on, otherwise consider a full backup. In either case, move on.

Was the problem caused by a public error?

YES

NO

The infraction is a Game Rule Violation, the penalty is a Warning.

If you can apply a simple backup, do so. Otherwise, check if one of the codified partial fixes is appliable. If it is, apply it and move on, otherwise consider a full backup. In either case, move on.

Did the player confirm the number of cards to draw with his opponent before drawing?

YES

NO

The infraction is a Game Rule Violation, the penalty is a Warning.

If you can apply a simple backup, do so. Otherwise, check if one of the codified partial fixes is appliable. If it is, apply it and move on, otherwise consider a full backup. In either case, move on.

The infraction is a Hidden Card Error, the penalty is a Warning.

If a player cast a card that does not have morph face down, swap the card with one with morph from that player's hand, if possible. Otherwise, upgrade the penalty to Game Loss. Either way, we're done.

In all other cases, perform a simple backup if necessary, then fix the problem. After this fix, the instruction that caused the infractions is not repeated. This can cause the player to have fewer cards than he or she was supposed to have.

One of the following scenarios will be true:

  • The problematic set has become empty. There is no remedy to apply, move on.
  • Some cards were added to a hand too early.
  • A card should have been revealed to check it was a legal choice, but it wasn't.
  • A problematic set still exists, for reasons different from the two above.

The player reveals his or hand, and the opponent chooses the appropriate number of cards to set aside. The player performs the actions the were skipped, then those cards are returned to his or her hand.

The player reveals his or hand, and the opponent chooses a card. If that card wouldn't have been a legal choice, it's considered an excess card. Otherwise, that's the card to use for any required action.

(Remember that cards that were previously known to the opponent can't be chosen.)

The player reveals his or hand, and the opponent chooses the appropriate number of cards to reduce the set to the correct size. Those cards are considered excess cards.

(Remember that cards that were previously known to the opponent can't be chosen.)

If there are excess cards, return those to the correct zones. If you return cards to a library, shuffle them in the random portion. We're done.

If the player knew the identity of some of the cards that were illegally moved, that many cards, chosen by the opponent, are returned to the top of the library rather than shuffled in.