Which game is mathematical, Acronymble or Rithmomachy?
Acronymble: Acronymble is a board game that came on the market in 1991. Acronymble:  It challenges players to create funny acronyms (known as "noodles") from a random sequence of letters. Rithmomachy: Rithmomachy (or Rithmomachia, also Arithmomachia, Rythmomachy, Rhythmomachy, or sundry other variants; sometimes known as The Philosophers' Game) is a highly complex, early European mathematical board game.
Rithmomachy