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What and Who

Still Playing Mastermind

Benjamin Doerr
Max-Planck-Institut für Informatik - D1
AG1 Mittagsseminar (own work)
AG 1, AG 2, AG 3, AG 4, AG 5, RG1, SWS, MMCI  
AG Audience
English

Date, Time and Location

Tuesday, 27 March 2012
13:00
30 Minutes
E1 4
024
Saarbrücken

Abstract

We play Mastermind with n positions, n colors and black answer pegs only. In other words, you try to guess a hidden word in {1, ..., n}^n by guessing such words. For each guess, I tell you exactly in how many positions your guess and my hidden secret coincide. The main question is how many guesses you need to find the secret.


Surprisingly, the best known bound is only O(n log(n)), whereas for n^{\eps} \le k \le n^{1-\eps} colors, \Theta(n) guesses are necessary and sufficient.

In this talk, I'll give a good argument why such a gap is natural, and a better one, why not.

This is on-going work with Reto Spoehel, Henning Thomas (ETH) and Carola Winzen.

Contact

Benjamin Doerr
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Tags, Category, Keywords and additional notes

Black board talk

Benjamin Doerr, 03/27/2012 14:43
Benjamin Doerr, 03/22/2012 22:57
Benjamin Doerr, 03/22/2012 18:14
Benjamin Doerr, 03/22/2012 18:13 -- Created document.