Insufficient Material

Insufficient material is a descriptive administrative phrase, not an inherited chess word, and it is notably not the vocabulary used by FIDE. The FIDE Laws of Chess never use the phrase: Article 5.2.2 speaks of a dead position, in which neither player can checkmate the opponent's king with any series of legal moves, and Articles 5.1.2, 6.9 and 7.5.5 use the wording cannot checkmate by any possible series of legal moves. The phrase itself is standard in English-language chess writing and in US Chess rules, where rule 14E covers insufficient material to win on time and lists the lone king, king and knight, king and bishop, and king and two knights against no pawns. Material in the chess sense means the pieces themselves considered as fighting resources, from Latin materia meaning matter or stuff. The conceptual test differs between federations: FIDE requires only that a win be possible by some legal sequence, while the USCF requires that the win be forcible. No source located in this session gives a first documented use or coinage date for the phrase.

First documented: n.a. — n.a.