With the new "abuse" detection system, rapid communication will lead to warnings and mutes, which prevent us from saying things like "Pawn mates (Pawn + #)" or "Rook or Knight good". Tell your partner two things in a row once, you get a warning. Tell them two things in a row twice, you get muted for an hour, preventing you from relaying crucial information and putting you at a severe disadvantage.
Until they fix this, I recommend a couple courses of action:
1. If you know your partner prior to the game, set up voice chat to avoid in-game chat.
2. If you get a warning about "community guidelines", log off for an hour so you don't get muted mid-game.
3. Submit support tickets each time you get muted until they fix this, as it pretty much breaks bughouse until they resolve it. If they don't hear about it often enough, site admins and programmers will dismiss or ignore it, like they have the crazyhouse threefold repetition bug that has been in place for well over a year..