Pope Innocent III never stated that it is not a crime to kill someone after a game of chess.
The rumor stems from a massive historical misattribution of a medieval text titled A Morality on Chess (or the Innocent Morality).
The Source of the Myth
• The Text: Around the year 1210, a popular treatise circulated that used chess as a metaphor for human morality. Over time, folklore and misattributed records claimed that Pope Innocent III authored the text and declared that if a quarrel broke out during chess and resulted in a death, it was not considered homicide.
• The Reality: Modern historians attribute A Morality on Chess to John of Waleys, a Franciscan friar, rather than the Pope. Furthermore, the text was a moral allegory, not an official decree altering canon or secular laws on murder.
The Church's True Stance on Chess
In reality, the medieval Catholic Church took the exact opposite approach. Rather than excusing violence caused by the game, the Church repeatedly tried to ban or restrict chess because it frequently led to gambling, arguments, and fighting.
• In 1215, the Fourth Council of the Lateran (convened by Pope Innocent III himself) strictly forbade priests from playing or even watching chess.
• In 1240 and 1255, various regional church synods throughout Europe extended these prohibitions, declaring chess forbidden to the clergy entirely to avoid moral distraction and vice.
