1Your back rank, shuffled
Before anything moves, both back ranks are shuffled — the same shuffle for both players. The king lands somewhere, the rooks somewhere else — a position neither of you has likely played before.
The rule
The back rank is shuffled at random, the same way for both players.
How it plays
2Castling still comes home
However strange the corner looks, castling ends where it always did: king and rook on the squares they have always landed on. No opening book can save you here; the chess has to.
3The exact rules
Both players receive the same deal. The two bishops always start on opposite colours, and the king always starts between the two rooks. Castling ends exactly where it always does: king on g1 or c1, rook on f1 or d1. Everything else is chess. The same as ordinary chess: checkmate the other king, or win on time. Only the starting row is different.
Six finds
Moments to look out for. Each one you make in a game is kept in your finds.
Castled
Castle once.
Castled long
Castle to the queen's side.
King stays put
Castle in a way that leaves your king on the square it started on.
Early castle
Castle by your 10th move.
Bishop mate
Checkmate with a bishop.
Knight mate
Checkmate with a knight.
Questions
Do I need an account?
No. An account keeps your rating and your finds on every device.