The bridge uses all seven Soma pieces, 27 cubes in total. Here is one solution: first the finished figure, then the pieces one by one from the floor up, in an order you can follow with real pieces.
- Vsmall corner
- LL shape
- TT shape
- Zstep (Z shape)
- Atwist A
- Btwist B
- Pbranch
Opens the solver with this figure. Press "Next" to place one piece at a time, and drag to turn the view.
Step by step
Build in this order from the floor up, lowering each piece from above. Every piece rests on the floor or on pieces already placed.
Step 1 · Place piece A (twist A) on layers 1–2, on the right. Three of its cubes lie on layer 1, and one sticks up onto layer 2.
Step 2 · Place piece P (branch) on layers 1–2, on the left. Three of its cubes lie on layer 1, and one sticks up onto layer 2.
Step 3 · Place piece T (T shape) on layers 1–3, at the back right. It stands upright like a wall running from left to right.
Step 4 · Place piece Z (step) on layers 1–3, at the back. It stands upright like a wall running from left to right.
Step 5 · Place piece L (L shape) on layer 2, in the middle. It lies flat: a row of three from left to right, with the fourth cube at the back right corner.
Step 6 · Place piece B (twist B) on layers 2–3, in the middle. Three of its cubes lie on layer 2, and one sticks up onto layer 3.
Step 7 · Place piece V (small corner) on layers 2–3, on the left. It stands upright like a wall running from front to back. All 7 pieces are in place and the figure is finished.
Layer by layer, seen from above
Layer 1 is the floor. In each plan the top edge is the back of the figure and the bottom edge is the front.
Tip
Piece B (twist B) fits in only one place in this figure, apart from turning or mirroring the whole figure: the place shown in step 6. Find its spot first, and the other pieces have fewer places left to go.
About this figure
- Size: 7 wide, 2 deep and 3 high (in cubes).
- Solutions: 7. The figure cannot be turned or mirrored onto itself, so every one of them is different.
- Counted with this tool's solver, which tries every position of every piece. Two solutions count as the same when turning or mirroring the whole figure turns one into the other (a mirror image swaps pieces A and B).