• A computer/human Mastermind player using grids, wdg. South African Computer Journal, 30:3-8, 2003.
  • Static Mastermind, wdg. J. Combin. Math. Combin. Comput., 47:225-236, 2003.
  • Mastermind revisited, wdg. J. Combin. Math. Combin. Comput., 51:215-220, 2004.