小リバーシ

The flipping game on a 4×4 or 6×6 board, which can grow to 8×8 mid-game.

The small boards the game is taught and studied on. 6×6 has been solved — a second-player win — which is no help at all over a real board.

別名はFlipversi 6x6。

目的

Finish with more discs than the other colour.
The game ends when neither colour has a legal move — usually a full board. Equal counts are a draw.

The centre four squares start with two discs of each colour, on the diagonals.
The set-up lets a game start the other way: centre discs placed, or laid by the players.
A disc goes only where it brackets one or more of the other colour in a straight run — any direction — with one of your own at the far end. Every bracketed run turns to your colour.
A colour with nowhere to go passes, and the other colour plays again. You may not pass while you have a move.
When neither colour can move, the discs are counted.

Either colour may open, or the first stone may be drawn by lot.
The threat reading, hints and the chance-of-winning bar are switched off: there are no lines to read here, only discs to count.
4×4, 6×6 or 8×8, and the smaller boards can grow.