Yu - Gi - Oh ! - Duel 018 Second Stage is the eighteenth chapter of the " Yu - Gi - Oh ! " manga . This chapter was originally printed in the " Weekly Shōnen Jump " magazine in Japanese . Its first English release was in the " Shonen Jump " magazine . It has been reprinted in volume 3 of the and volume 2 of the bunkoban . Summary . Start of Stage 2 . Dark Yugi continues Shadow Game with Shadi . A portion of the floor has just collapsed , revealing a hole , with two large glowing eyes inside . Yugi realizes that whatever is down there is trying to make its way up , so he turns to run . Yugi ' s not quick enough , as two hands emerge and grab him by the arms . The rest of the crocodile - like monster , Ammit , emerges and opens her mouth over Yugi . Shadi explains that this is the second stage of their game , " Concentration or Death " and the only way for Yugi to escape Ammit ' s clutches is to win . Yugi suspects Ammit is another one of Shadi ' s illusions . Shadi confirms that he is correct , but illusion or not , if Yugi feels her bite , he will die . Shadi says that her last meal was Curator Kanekura , not so long ago , so she must still be ravenous . For Yugi to survive , he must clear the stage , causing the illusion to vanish , Shadi informs him . A 3x3 grid of stone plates labeled with question marks appear before Yugi , and Shadi begins to explain the rules . He compares the tablets to the game concentration , where players attempt to find matching cards on a surface of face - down cards , by turning over two at a time . Yugi spots a problem ; such a game would require an even number of plates , but there are nine in this game . Shadi smirks that he ' s right and says that there is an extra plate in the middle and Yugi must name the picture on it . He doesn ' t need to match the other pairs , Shadi continues , however he is not allowed to turn over any of the nine plates . Shadi gives Yugi fives minutes to solve the puzzle before Ammit closes her jaws on him . Yugi starts to worry . Shadi laughs and gives him a hint to the puzzle ; the plates are a mirror of Ammit . The game starts and Yugi tries to concentrate , but thinks there are too few clues . He finds it hard to think straight as he is too scared . One of the ushebti starts to crack . Remembering that if shows weakness , the ushebti supporting Anzu will break , he vows to save her , even it costs his life and promises that he ' ll solve the puzzle no matter what . Jonouchi and Yoshimori . In the university hallways , Jonouchi is still being chased by Yoshimori . They reach a dead - end and Jonouchi calls for a time - out . He says that he accepts the professor ' s challenge and they should enter the room next to them and fight fair and square , like men . When Jonouchi enters the room , he sneaks a fire extinguisher from the hall in with him . The professor follows and gets sprayed by the extinguisher . Jonouchi laughs that in his fights , " fair and square " means anything goes . Covered in the liquid from the extinguisher , Yoshimori closes in on Jonouchi and knocks the extinguisher out of his hands . Unarmed , Jonouchi resorts to punching the Yoshimori . The professor takes the blow , seizes Jonouchi by the collar and pushes him towards the window . Jonouchi protests that they ' re on the third floor , but is shoved through the glass . Outside the window , Jonouchi grabs onto the curtain to save himself from falling . However the curtain starts to come off its rail , unable to support him . Jonouchi swings into the wall managing to stand on a ledge , as the curtain falls . Overhead , Jonouchi sees Anzu standing on the board over the side of the building . He wonders what she is doing there , but is interrupted , by the zombie professor , who is now climbing out the window . Solving Stage 2 . Yugi has one minute left to solve the puzzle . He fears that at this rate , both he and Anzu are doomed . He runs the puzzle by himself again ; there are nine plates , the one in the middle is the puzzle and all of them are a mirror of Ammit . A mirror reflects a person ' s form and since this is a game of concentration , he deduces that , eight of the plates represent 4 pairs of things Ammit has and the remaining one is something she has only one of . He quickly checks ; there are two ears , eyes , nostrils and hands on the monster . Shadi announces that there are five seconds left . Yugi thinks about what the monster has only one of and on the last second , calls out that the answer is " mouth " . The pieces of the puzzle turn over , revealing the body parts Yugi mentioned , with the mouth in the middle . With that , Ammit , the plates and the holes in the floor all vanish . Shadi congratulates Yugi on passing the second stage of his game , but now is the final stage , which will be much more difficult than the ones so far . Appearances . Debuts are in bold .