Double check also be possible. For example, in the position shown, after Black plays 1...d5, White plays 2.exd6e.p. quintuple check (the "moa" is a non-leaping knight which first takes a diagonal step, then an orthogonal one). After the "en passant" capture, five pieces check the black king: both moas, the rook, the grasshopper and the bishop. In xiangqi, the Chinese version of chess, triple check and even quadruple check is possible even without using fairy pieces, as in the following examples: Double check In chess, a double check is a check delivered by two pieces simultaneously. In chess notation, it is almost
Quadruple reed to play". Presumably a quadruple reed is folded twice, in opposite directions, instead of once (\/\ or \/\/ instead of \/ shaped), or either folded twice in the same direction or wrapped around (◎ instead of ○ shaped). Both options could result in what may be considered a doubly thick double reed. Quadruple reed A quadruple reed is a type of reed by means of which the sound is originated in various wind instruments. The term "quadruple reed" comes from the fact that there are four pieces of dried palm leaf vibrating against each other, in pairs. A quadruple reed,