Continuity mistake: When the 'good' Geri fakes a heart attack, a black knight can be seen standing on the edge of the board, right on the same diagonal as a black bishop. After the 'good' Geri falls to the ground, you can see that the black knight has moved. (00:02:58)
Continuity mistake: On his third move, the 'good' Geri moves his king's bishop to the third rank (one rank ahead of B2's pawn). After the 'evil' Geri captures the knight on h3, the white king's bishop is now on the second rank. Two shots later, the bishop is now on the first rank. (00:01:54)
Deliberate mistake: During the game, you can see a hand that supposedly belongs to the 'evil' Geri and the 'good' Geri in the background, even though there is only one Geri in reality. This also happens with the laughs of 'evil' Geri. (00:02:24)
