With the regular chess pieces, it is only possible to check one person twice with one move. However, with the fairy pieces, higher N-tuple checks than a double-check are possible. A quintuple check occurred in this game https://www.chess.com/4-player-chess?g=3754030 which makes it the record so far. Try to make different N-tuple checks yourself and post if you can make quadruple/quintuple checks with less material or if you can find a 6-check or something of a higher degree.
With the regular chess pieces, it is only possible to check one person twice with one move. However, with the fairy pieces, higher N-tuple checks than a double-check are possible. A quintuple check occurred in this game https://www.chess.com/4-player-chess?g=3754030 which makes it the record so far. Try to make different N-tuple checks yourself and post if you can make quadruple/quintuple checks with less material or if you can find a 6-check or something of a higher degree.