RSVP (board game) player's advantage to place letter blocks so that they cannot be used by his opponent and, whenever possible, to use letters placed from the opposite side. A total to be played to is determined at the start of the game - usually 100 points." RSVP (board game) RSVP was a vertical version of "Scrabble" introduced by Selchow and Righter in 1958 and promoted as "3-D Scrabble". Two players spelled words using cubical tiles with letters on an upright grid board. "RSVP" was sold in the UK under the Spear's Games label as item #1051 (Copyright 1966 by Production and Marketing
Tile tracking or 'consonant-heavy', how many S's or blanks are unseen, if an opponent is likely to have a bingo on their rack, or which tiles to play or conserve. For example, if Alice has the option of playing J(I)NN or J(I)LL, and four N's and zero L's remain unseen, then assuming both plays are otherwise equal (in terms of score, openings for the opponent), J(I)NN is likely the better play. Letter frequency lists for both Scrabble and Words with Friends are easily accessible (some versions of Scrabble have the tile distribution directly on the board) and, unlike word lists, using them