Vintage Tricky Disky Pocket Puzzle 3 Games In One

Solution to the Tricky Disky (and Varia-Disk):

Phase 1: Solve 3 pairs of pieces in the top half.

1. Find the piece that is to go the front group at the top right.
2. If it is in the bottom layer, then turn the bottom to get it to the front group.
3. If it is in the top layer, then turn the top to get it to the front group, do F2 and turn the top layer back again to where it was before.
4. Twist the front to put the piece at the top LEFT of the front group.
5. Find the piece that is to go the front group at the top left.
6. If it is at the front, top right, then swap the two pieces with the sequence FTF'T' F TFT'F2.
7. If it is elsewhere in the top layer, then turn the top to get it to the front group, twist the front to put the piece at the bottom left, turn the top back and then finally do F to put the pieces correct.
8. If it is in the bottom layer, then turn the bottom to get it to the front group. If it is now at the bottom right of the front group then do TFT'F, but if it is at the bottom left then simply do F.
9. The top front pair is now correct. Do T, and then repeat all the above twice more.

Phase 2: Solve 3 pairs in the bottom half.

1. Turn over the disk so that the solved pairs are at the bottom, on the left, right and back.
2. Use the same method as phase 1 to solve 3 pairs from the top half. When finished, everything but the front group is solved.

Phase 3: Solve the final group.

1. Rotate the front group, so that at most only two pieces need to be swapped.
2. If you need to swap the top two pieces, then do the following moves: F T2 F B' T2 F T2 F' T2 B T2 F' T2
3. If you need to swap the bottom two pieces, just turn the disk over and do the above sequence.
4. If you need to swap two other adjacent pieces, then turn the front to bring them to the top layer, do the sequence above, and turn the front back again to put the group into its correct position.
5. If you need to swap two pieces diagonally, do a quarter turn of the front pieces such that you get a position where both the top pair and bottom pair should be swapped. Then do this sequence: T2 F B T2 B T2 F B T2 B T2 F B T2. Then turn the front so as to put the pieces correct.

Solution to the Triple Disky:

Phase 1: Solve 2 pairs of pieces in the top half.
Use the same method as phase 1 for the normal disky.

Phase 2: Solve 2 pairs in the bottom half.
Use the same method as phase 2 for the normal disky.

Phase 3: Solve the final group of pieces.

1. Hold the puzzle so that the final unsolved group is at the front.
2. Rotate the front group, so that at most only two pieces need to be swapped.
3. If you need to swap the top two pieces, then do the following moves: T F T F2 T' F' T F T F T' F'
4. If you need to swap the bottom two pieces, just turn the disk over and do the above sequence c.
5. If you need to swap the two pieces on the right side of the front group then do T' F T F2 T' F'. Note that this is a shorter way than with the normal tricky disky, since it takes advantage of the fact that there are identical pieces.
6. If you need to swap the left two pieces, just turn the disk over and do the above sequence e.
7. If you need to swap two pieces diagonally, do a quarter turn such that you get a position where both the top pair and bottom pair should be swapped. Then do this sequence: T F' T F' T F' T F T F  

Source: https://www.jaapsch.net/puzzles/tricky.htm