Concessions
From CSWiki
Scheme
Each set of letters matches to a box on the grid reading across (e.g., G, S, X, ID, UEI, NNWH goes in a box with three singles, one double, one triple, and one quadruple, like row 2, column 2). When letters are put in their proper boxes, a message can be read going down in the grid, starting in the top-left.