Blindfolded Solving

From Speedsolving.com Wiki

Blindfolded solving (abbreviated BLD) is the discipline of solving a puzzle without visual reference while manipulating it.

Official Blindfolded Events

The WCA currently recognizes three official blindfolded events: 3x3x3, 4x4x4, and 5x5x5.

Blindfold Guides

Macky's Guides on 3OP and M2, and other information.
Stefan Pochmann's blindsolving pages.
Erik Akkersdijk's blindsolving section.

More Resources

Leyan Lo's blindfolding site