index endgame studies. Solution: 1. Kd1 Ka3 2. Kc1 a5 3. h4 a4 4. h5 Ka2 5. h6 a3 6. h7 Ka1 7. h8=N a2 8. Ng6 fxg6 9. f7 g5 10. f8=N g4 11. Ne6 dxe6 12. d7 e5 13. d8=N e4 14. Nc6 bxc6 15. b7 c5 16. Kd1 Kb2 17. b8=Q+ 1-0 Selected publications Books 1975 (with John L. Selfridge) Optimal coverings of the square, North-Holland, Amsterdam, OCLC Number: 897757276. 1976 Packing [1, n] with solutions of ax + by = cz — the unity of combinatorics Atti dei Conv. Lincei, 17, Tomo II, 173–179 1981 Unsolved problems in number theory, Springer-Verlag in New York, 1982 Sets of integers whose subsets have distinct sums, North-Holland, OCLC Number: 897757256. 1982 (with Elwyn Berlekamp and John H. Conway) Winning Ways for your Mathematical Plays, Academic Press, . 1987 Six phases for the eight-lambdas and eight-deltas configurations, North-Holland, OCLC Number: 897693235. 1989 Fair game how to play impartial combinatorial games, COMAP in Arlington, MA, . 1991 Graphs and the strong law of small numbers in 'Graph Theory, Combinatorics, and Applications, Wiley, OCLC Number: 897682607. 1994 (with Hallard T. Croft and Kenneth Falconer) Unsolved problems in geometry, Springer-Verlag, . 1996 (with John H. Conway) The book of numbers, Copernicus, . 2002 (with Paul Vaderlind and Loren C. Larson) The inquisitive problem solver, Mathematical Association of America, . 2020 (with Ezra A. Brown) The Unity of Combinatorics, Mathematical Association of America, Papers References Sources Albers, Donald J.; Alexanderson, Gerald L. (1985). Mathematical People: Profiles and Interviews, John Horton Conway by Richard K. Guy: pp. 36–46, Princeton University Press, Albers, Donald J.; Alexanderson, Gerald L. (2011). Fascinating Mathematical People : interviews and memoirs, Interview with Richard K. Guy: pp. 165–192, Princeton University Press, Berlekamp, Elwyn R. (2014). The Mathematical Legacy of Martin Gardner Society for Industrial and Applied Mathematics (SIAM), 2 September 2014 Fortney, Valerie (2015). "Richard Guy to visit his namesake alpine hut" The Calgary Herald, 10 September 2015 Guiltenane, Erin (2016). Emeritus professor marks a century of life and learning University of Calgary: Faculty of Science, 29 September 2016 MMA (2016). Happy Birthday, Richard Guy! Mathematical Association of America, 30 September 2016 Mulcahy, Colm (2016). Richard K. Guy turns 100 MMA: CardColm, 30 September 2016 Roberts, Siobhan (2016). An “Infinitely Rich” Mathematician Turns 100, 30 September 2016 Scott, Chic (2012). Young at Heart: The Inspirational Lives of Richard and Louise Guy,