Maven (Scrabble) on Scrabble. The problem with Alpha Beta is that some Scrabble endgames require 14 moves to play out, and it is not possible to search that deeply. This is not merely a theoretical possibility. When one player is "stuck" with a tile, then playing out all remaining tiles is impossible. In that situation the optimal strategy for both sides is usually to play one tile on each turn. Maven uses a different approach. The B* search algorithm is a selective-depth, progressive-widening algorithm that guarantees to find optimal solutions to two-player games when one can compute upper and lower bounds on
Tile drainage his native Scotland to his farm in Seneca County, New York. Johnston labored to lay worth of clay tile on . The effort paid off by increasing his wheat yield from 12 bushels per acre to 60 bu/acre. Johnston, "...father of tile drainage in America...", continued to advocate tile drainage throughout his life, attributing his success as a farmer to the formula "D,C, and D" (dung, credit, and drainage). The expansion of drainage networks was an important technical aspect of Westward Expansion in the 19th century. Although land in the United States was parceled out in accordance with the Public