Chess for the colour blind

How do the colour blind people play chess ?? Do they have some kind of special board for them or something.......?  And has there ever been a world champion who was colour blind??

I don

I think colour blind people can tell between black and white. If they couldn't, they would just be blind

"There are different types of colour blindness and there are extremely rare cases where people are unable to see any colour at all"

http://www.colourblindawareness.org/colour-blindness/

Compared to pigeons all humans are colorblind. 

Cool fact...... But atleast we can tell the black and white squares on a chess board...       what more could we want?

they play outside when sun is hot

You can tell the difference in opposing pieces in B&W photos.

as long as you can see graduations in black or colors (black not being a color) color blindness is not a factor.

I'm red-green color-blind, and have Daltonism as well, which happens when the light becomes dimmer.  Then the blues and yellows start to blur into each other.

As for the original post, the yellow colored "o" and the "i" letters are almost invisible against the white background on my monitor.

But color-blindness typically isn't total, you can still see colors, just not as many as extant.

As long as you can see the colors of traffic signals, everyone's still safe.  

        100% colour blindness, or monochromatic vision, is very rare and subjects cannot see any colour at all. Black and white are not colours, but an absence of colour. Subjects can see black and white as well as anybody else.

White is the combination of all colors.  Sorry to inform.

"White light" contains all the colors.

Black is just black.  Darkness without color.

For the color blind they know at traffic signals the red is always on top and green on bottom .    This is how they know ... 

I made special goggles where you see a little infrared and it completely knocks out green so I can't see my oven clock but can see the remote light dimly.  It knocks out some lower reds too but not middle and high reds. 

I believe that color blind mostly see colors in a "gray scale"...but correct me if I'm wrong. So white and black colors would still look white and black. They would be able to differetiate between green and white, for example, because green is darker than white.

Haha OP, if they couldn't tell black from white.... they would be regular blind... XD

That depends whether you're talking about hue or tint. The hue "white" is all colors. The tint "white" is no color. The hue "black" is no color but the tint ""black" is all colors.

I never in my life thought I would be confused by Gomer Pyle !  

With my special goggles whites become magenta.  Ha-cha ...except for fluorescent lighting somehow. 

That explains a lot.  But where does the very subtle blue from streets and on snow come from?  Snow is said to be white but even on cloudy days it has that blue undertone but still noticeably white.