Examples of Unnecessary Moves

Unnecessary Moves are a level 24 convention.

All of the 2's are played on the stacks.
Alice clues number 1 to Cathy, touching a single 1 on her chop. Since all of the 1's are already played, it is globally known that this must be some kind of Trash Push.
Bob sees that the pushed card is a red 3. Cathy has no other red cards in her hand, so Alice could have just clued red to Cathy instead of doing a complicated Trash Push.
Thus, Bob knows that this is an Unnecessary Trash Push. Bob blind-plays his Finesse Position card as an Ignition. It is the blue 3 and it successfully plays.
Cathy knows that this must be a Trash Push Finesse on blue 4. Cathy blind-plays her slot 4 card, but it is red 3 instead and it successfully plays.
Cathy now knows that since the two cards did not connect to each other, this must have been an Unnecessary Trash Push.

See the example image below.
Alice can clue red to Bob in order to get the red 3 to play. Nothing is "blocking" the clue.
Instead, Alice clues green to Bob as a Trash Push.
Bob knows that this is a Trash Push, so he blind-plays his slot 1 card. It is a red 3 and it successfully plays.
Cathy sees that this Trash Push was unnecessary. So, Cathy blind-plays her Finesse Position card as an Ignition. It is a yellow 1 and it successfully plays.

See the example image below.
Alice can clue yellow to Cathy in order to perform a Finesse on the yellow 3 into the yellow 4.
Instead, Alice clues red to Cathy as a Trash Push.
Bob knows that this is a Trash Push and that the Trash Pushed card is a one-away-from-playable yellow 4. Thus, this must be a Trash Push Finesse that is calling for the yellow 3.
Bob blind-plays his Finesse Position card. It is a yellow 3 and it successfully plays.
Cathy plays the yellow 4.
Donald sees that this Trash Push was unnecessary. So, Donald blind-plays his Finesse Position card as an Ignition. It is a green 4 and it successfully plays.

See the example image below.
Alice clues number 1 to Donald on a blue 1.
Bob knows that from Donald's perspective, Alice's clue looks like a Play Clue on an unplayed 1. Donald will go on to misplay the blue 1.
Thus, Bob knows that this is a Trash Finesse or Trash Bluff. He blind-plays his Finesse Position card. It is a blue 2 and it successfully plays.
Cathy knows that all Trash Bluffs are unnecessary. She also sees that the unnecessary component will be a Trash Push instead of a Chop Move (since the blue 1 was on Donald's chop). Cathy plays her previously known red 1.
Donald also knows that Trash Bluffs are to be treated as unnecessary. Donald blind-plays his slot 1 card to fulfill the "extra" component of the Unnecessary Trash Bluff. It is a red 2 and it successfully plays.

See the example image below.
Alice can clue number 4 to Bob in order to get the blue 4 to play. Nothing is "blocking" the clue.
Instead, Alice clues red to Donald, touching a trash red 1.
Bob knows that from Donald's perspective, Alice's clue looks like a Play Clue on the red 4. Donald will go on to misplay the red 1 as a red 4.
If Bob plays his Finesse Position and it successfully plays, then that will not resolve the situation — Donald will then go on to think that the red card is red 5, which is not true.
Thus, Bob knows that this must be an Unknown Trash Discharge. Bob blind-plays his Third Finesse Position. It is a blue 4 and it successfully plays.
Cathy sees that the Unknown Trash Discharge was unnecessary. She also sees that the unnecessary component will be a Trash Push instead of a Chop Move (since the red 1 was on Donald's chop). Cathy plays her previously known green 4.
Donald also sees that the Unknown Trash Discharge was unnecessary. Donald blind-plays his slot 2 card to fulfill the "extra" component of the Unnecessary Unknown Trash Discharge. It is a yellow 1 and it successfully plays.