New in recent weeks
What the centre has added lately, for every game.
Chess
The fourth of the board games, in clubs of its own: with a friend or the computer at three strengths, a clock or none, draws offered, and hints shown on the board.
Backgammon
The third of the board games, in clubs of its own: single games or matches, the doubling cube, a friend or the computer at three strengths, and hints shown on the board.
Draughts
The second of the board games, in clubs of its own: English draughts on 8 by 8 and international on 10 by 10, with a friend or the computer at three strengths, and hints.
Mahjong
Mahjong solitaire in clubs of its own: five layouts, every deal one that can be cleared, tiles to drag onto their partners and size as you like, a computer player for hints, duplicate deals and leaders boards.
Noughts and crosses
The first of the board games, in clubs of its own: classic, Ultimate - nine boards in one - and five in a row, with a friend or the computer at three strengths, and hints.
A tidier bar
Every bar keeps to one row: on a small screen its buttons show their pictures alone, and slide along when even those do not fit. Administration is under your name.
Thirteen solitaires
Twelve more to play beside Klondike, from FreeCell and Spider to TriPeaks and Golf, each with its own computer player for hints, and duplicate deals and leaders boards of every one.
Stronger computer players
Every game's computer player now runs at full speed in your browser, on all its cores. Bridge's play looks ahead with an exact double dummy solver, and its bidding in a contested auction tries each call out first.
Leader boards
A room keeps tables of a game waiting and ranks every game played at them, with the computer's own results as a benchmark - or one deal for everybody, each playing it once.
Play it again
Every deal and puzzle has a reference: play the same one again later, at a table of your own. Alone with the computer, take your last move back, or let the computer play your seat.
Phones and tablets
Zoom a table and move it about with your fingers, play on the whole screen, and add any game to your home screen as an app of its own.
Rooms of your own
A room - or a whole club - can be hidden, found only by those given its key; and a table kept off the list is joined by its code.
Crosswords by the club
Each club sets crosswords of its own - British, American or a quick mini - opening and closing when it says.
Help where you are
Help on every page, about what that page has for you; and each club's discussion board for its members.
What the games are: the Games Centre. How to find your way around: frequently asked questions.