The item with black squares is always the last one you click and is treated as the anchor item.

具有黑色矩形的项目被视为锚定项并只能最后单击。

youdao

Move the cube around to connect a path of like colors, but be careful you don't get blocked by the black squares.

动议立方左右，连接的道路一样的颜色，但要小心你不会阻止由黑色广场。

youdao

Both items are now highlighted, but one is surrounded by black squares, while the other is surrounded by hollow squares.

现在，两个项目都已高亮显示，其中一个项目被黑色的矩形包围，而另一项目则被中空的矩形包围。

youdao

He shared his thoughts Tuesday on Instagram, where he was posting blank black squares instead of his usual artful black-and-white images.

CNN: Instagram backtracks after user privacy revolt

Silva, a pony-tailed woman with nails painted emerald green, made a small bag of brown and black cloth squares to hold the monkey, which is still too young to walk.

NPR: Monkey-Mothering 24-Hour Chore For Colombian Woman

As huge fans of both technology and art, our team decided to play around with some QR art concepts, borrowing some elements from traditional graffiti (drips), technology and toys (pixels made out of legos) and incorporating some rounded lines, added movement and bright colors to show that there is more to QR codes than black and white squares.

FORBES: JESS3 QR Art