What a beauty!
Andrei of MTM Wood has done it again...

Show us underneath
Here is a picture of the bottom...It is solid throughout so it pretty much looks like the top. He puts the better looking wood surface on top.

Great board from a great board maker. I have 3 of his creations. What size are the playing squares?
I had this made with 2.5" squares to go with my 4.4" king set.

Do they do folding boards as well?
His work is mostly custom order. I don't see any folding boards on his website. If you have a design, you could try to send it to him and see if he can make it. That is what I did with this board as it was not normally something he made.
My new end-grain chess board - ships from Russia today!
Solid wood made from African Sapele and Birch - letters and numerals are inlaid (no veneers). Satin finish is smooth as a babies ass! Five coats of lacquer...
Andrei has such amazing skill as a woodworker!