Versus game rules

These are the main rules of the versus games. For details, read “How to play (for beginners)”, which appears when you choose a game.

Chess

• Castling, en passant, and promotion (choose a queen, rook, bishop, or knight) are all in the game.
• Checkmate wins. Stalemate, the 50-move rule, the same position 3 times, and insufficient material are draws.

Shogi

• You can drop captured pieces. You can choose whether to promote (a piece that could no longer move must promote).
• Nifu (two pawns on one file) and uchifuzume (checkmate by a pawn drop) are not allowed. Checkmate wins.
• The same position 4 times is a repetition (sennichite), which is a draw.

One Card (2–4 players)

• Play a card that matches the color, or the number or symbol. The first player to play all their cards wins.
• There are Skip, Reverse, Draw 2, Wild, and Wild Draw 4 cards. You can play Wild Draw 4 only when you have no card of the current color.
• When you are down to 1 card, call “One Card!”. If someone points out that you forgot, you draw 2 cards.

Mahjong (4 players, riichi mahjong)

• Games are East-only or half games (hanchan). Red dora, open tanyao (kuitan), and head bump (atamahane) are used.
• Yaku, fu, and points are calculated automatically.

Color vision support

You can add symbols with “Color vision support” in “Settings” → “Style”.

• One Card colors get symbols (● red, ★ yellow, ▲ green, ■ blue).
• Red dora in mahjong get a “赤” (red) mark.