Check compatibility
- Game Center is an app released by Apple that allows users to play and challenge friends when playing online multiplayer social gaming network games. Games can now share multiplayer functionality between the Mac and iOS versions of the app.
- The new Mac operating system offers more than a name change. MacOS Sierra version 10.12 moves Apple's desktop OS closer to its mobile counterpart, gaining Siri, Apple.
You can upgrade to macOS Sierra from OS X Lion or later on any of the following Mac models. Your Mac also needs at least 2GB of memory and 8.8GB of available storage space.
MacBook introduced in late 2009 or later
MacBook Air introduced in late 2010 or later
MacBook Pro introduced in mid 2010 or later
Mac mini introduced in mid 2010 or later
iMac introduced in late 2009 or later
Mac Pro introduced in mid 2010 or later
New technologies at the heart of the system make your Mac more reliable, capable, and responsive — and lay the foundation for future innovations. MacOS High Sierra also refines the features and apps you use every day. It’s macOS at its highest level yet.
To find your Mac model, memory, storage space, and macOS version, choose About This Mac from the Apple menu . If your Mac isn't compatible with macOS Sierra, the installer will let you know.
Make a backup
Before installing any upgrade, it’s a good idea to back up your Mac. Time Machine makes it simple, and other backup methods are also available. Learn how to back up your Mac.
Get connected
It takes time to download and install macOS, so make sure that you have a reliable Internet connection. If you're using a Mac notebook computer, plug it into AC power.
Download macOS Sierra
For the strongest security and latest features, find out whether you can upgrade to macOS Catalina, the latest version of the Mac operating system.
If you still need macOS Sierra, use this link: Download macOS Sierra. A file named InstallOS.dmg will download to your Mac.
Install the macOS installer
Double-click the downloaded file to open a window showing its contents. Then double-click the file within, named InstallOS.pkg.
Follow the onscreen instructions, which will guide you through the steps necessary to install.
Begin installation
After installation of the installer is complete, open the Applications folder on your Mac, then double-click the file named Install macOS Sierra.
Click Continue and follow the onscreen instructions. You might find it easiest to begin installation in the evening so that it can complete overnight, if needed.
Allow installation to complete
Please allow installation to complete without putting your Mac to sleep or closing its lid. Your Mac might restart, show a progress bar, or show a blank screen several times as it installs both macOS and related updates to your Mac firmware.
Learn more
- If you have hardware or software that isn't compatible with macOS Sierra, you might be able to install the previous version, OS X El Capitan.
- macOS Sierra won't install on top of a later version of macOS, but you can erase your disk first or install on another disk.
- You can use macOS Recovery to reinstall macOS.
Use Chess on your Mac to play a match online, against your computer, or even against yourself.
Play a game
In the Chess app on your Mac, do any of the following:
Challenge your Mac or a person to a game: Choose Game > New.
Tip: When you start a new game, move the pointer over the items in the Variant and Players pop-up menus to get information about them.
Play a match online: Sign in to Game Center, choose Game > New, click the Players pop-up menu, then choose Game Center Match.
Get hints: Choose Moves > Show Hint. An arrow points to where you should move the piece. If the level of difficulty is set to Faster, hints aren’t available.
Take back a move: Choose Moves > Take Back Move for each move you want to undo.
See moves: Choose Moves > Show Last Move; an arrow points from the piece’s originating square to its new square. To see all the moves made during a game, choose Moves > Game Log.
Customize a game
In the Chess app on your Mac, do any of the following:
Set the level of difficulty: Choose Chess > Preferences, then drag the slider toward Faster or Stronger to decrease or increase the difficulty or speed (not available when you’re playing another person).
Change the look of a game: Choose Chess > Preferences, then choose a style for the board and pieces.
Change the viewing angle of the board: Click and hold any corner of the board, then adjust the viewing angle using your mouse or trackpad.
Hear moves spoken: Choose Chess > Preferences, select the checkboxes for the moves you want to hear, then choose the voices.
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Use spoken commands
Medieval 2 total war game of thrones mac. Make sure keyboard dictation is on in Dictation preferences.
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In the Chess app on your Mac, choose Chess > Preferences, then select Allow Player to Speak Moves.
When you see the feedback window (it shows a microphone icon with a fluctuating loudness indicator), press the shortcut key (the key you specified in Dictation preferences), then speak a command.
Try not to hesitate while speaking.
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You can use spoken commands for the following actions:
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Action | Spoken command example |
|---|---|
Move a piece | “Pawn e2 to e4” |
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Drop a piece | “Drop bishop at g4” (only for crazyhouse games) |
Promote a pawn | “Pawn e7 to e8 promoting to queen” |
Castle | “Castle kingside” or “Castle queenside” |
Take back a move | “Take back move” |