Mastermind or Master Mind (Hebrew: בול פגיעה, romanized: bul pgi'a) is a code-breaking game for two players invented in Israel.[1][2] It resembles an earlier pencil and paper game called Bulls and Cows that may date back a century. Original Invicta game set Mastermind was invented in 1970 by Mordecai Meirowitz, an Israeli postmaster and telecommunications expert. After presenting the idea to major