Sugoroku Mutou and Seto Kaiba's Duel (manga)

Grandpa and Kaiba's Duel was a game of a Duel Monsters between Seto Kaiba and Solomon "Grandpa" Muto.

In the manga and first series anime, it was an artificial Shadow Game, where the loser suffered the virtual reality equivalent of the "Experience of Death" Penalty Game. The game was used as a means of forcing Yugi to take part in Death-T and claiming Grandpa's "Blue-Eyes White Dragon" card.

In the second series anime, it was simply an attempt by Kaiba to take Grandpa's "Blue-Eyes White Dragon" card. The build-up to the Duel was based on a previous event in the manga, where Kaiba tried to buy Sugoroku's "Blue-Eyes White Dragon" card.

Prior events
Seto Kaiba was humiliated from losing to Yugi before in a Duel before, so he created the Death-T theme park within his Kaiba Land theme park as a means of getting revenge.

Kaiba kidnapped Sugoroku "Grandpa" Mutou, threatening to kill his grandson Yugi if he didn't co-operate.

At the Kaiba Land grand opening, Grandpa was put in a Battle Box, where he was to Duel Kaiba in front of a large audience. Yugi who had come to the opening as a special guest ran over to try and talk with Grandpa, but the glass was soundproof and they couldn't hear each other.

Grandpa thought that by having "Blue-Eyes White Dragon" in his Deck, he was guaranteed to win by just drawing it.

The Duel
Kaiba Summoned "Hitotsu-Me Giant", frightening Grandpa with the Solid Vision hologram it created.

Grandpa Summoned "Hobbit", activates a Spell Card and plays another monster in Defense. The "Hobbit" attacked, causing Kaiba to lose 500 Life Points.

Turns are skipped, during which Kaiba plays a monster which attacks and destroys one of Grandpa's, causing him to lose 300 Life Points and putting Kaiba in the lead.

Grandpa drew "Blue-Eyes White Dragon" and Summoned it. In response Kaiba Summons his own "Blue-Eyes White Dragon". On his next turn, he Summons another and on the turn after that, another.

Unable to compete with three "Blue-Eyes White Dragons", Sugoroku loses.

Aftermath
Kaiba took Grandpa's "Blue-Eyes White Dragon" card. As Grandpa's punishment for losing and the card's punishment for betraying him last time, he ripped up the card and declared that he now possess all the "Blue-Eyes White Dragon" cards in the world.

Kaiba inflicted the artificial "Experience of Death" Penalty Game on Sugoroku, causing him to be attacked by Solid Vision monsters, including Doppel-ganger. Yugi demanded that Grandpa be let out. Kaiba laughed and informed Yugi that having done human experiments, he concluded that the average person goes insane after about ten minutes and if Yugi wants the simulation to stop, he must swear to face Death-T.

The Duel
The beginning of the Duel is not shown.

Grandpa drew and Summoned "Blue-Eyes White Dragon".

Kaiba Summoned 2 "Blue-Eyes White Dragons".

Grandpa passed.

Kaiba Summoned another "Blue-Eyes White Dragon". He attacked with all three "Blue-Eyes White Dragons" and won.

Second series anime events
Kaiba entered Kame Game and found that Grandpa possessed a "Blue-Eyes White Dragon" card. Kaiba already having three copies of the card, wanted to possess the fourth so he would be the only person in the world with the card. However Grandpa refused to trade the card or sell it, because of its sentimental value to him.

Kaiba later had Grandpa kidnapped and brought to KaibaCorp. Kaiba proceeded to beat him a Duel and called Yugi to come and collect him. When Yugi and his friends arrived, Kaiba ripped up Grandpa's "Blue-Eyes White Dragon" in front of them, saying it could not be used against him now. To get revenge Yami Yugi then faced Kaiba in a Duel using Grandpa's Deck.

First series anime
The only cards seen used are Grandpa's one "Blue-Eyes White Dragon" and Kaiba's three "Blue-Eyes White Dragons".