SIAM Journal on Control and Optimization, Vol.48, No.8, 5073-5083, 2010
ON RUCKLE'S CONJECTURE ON ACCUMULATION GAMES
In an accumulation game, the Hider secretly distributes his given total wealth h among n locations, while the Searcher picks r locations and confiscates the material placed there. The Hider wins if what is left at the remaining n - r locations is at least 1; otherwise the Searcher wins. Ruckle's conjecture says that an optimal Hider strategy is to put an equal amount h/k at k randomly chosen locations for some k. We extend the work of Kikuta and Ruckle by proving the conjecture for several cases, e. g., r = 2 or n-2; n <= 7; n = 2r-1; h <= 2+1/(n-r) and n = 2r. The last result uses the Erdos-Ko-Rado theorem. We establish a connection between Ruckle's conjecture and the Hoeffding problem of bounding tail probabilities of sums of random variables.