Designed by Noah Prettyman, made by Eric Fuller, 2018.
(6 pieces, Ash and Wenge, 2.24 inches square)

Two standard looking 6-piece burr pieces, two plate burr pieces, and two irregular pieces, one of which is the first to come out, as shown on the upper right above. Here is what the puzzle maker said:

"Combined Burr is just a crazy puzzle that I had to make. Six pieces come together to form the familiar burr shape. Two standard stick pieces, two board pieces and two very unusual "I'm not sure what's going on here" pieces. With a whopping level 4.18 solution, this one will keep you guessing during assembly and disassembly. Crafted with Wenge and Ash, this burr is precise and well made. Shoulder joints along the length of the board burr pieces allow for the color contrast necessary without compromising strength."