Level 146 solution

Solver-verified route

1. Place Piece 1 across column 2 row 3, column 3 row 3, column 4 row 3.
2. Place Piece 5 across column 3 row 4, column 4 row 4, column 5 row 4.
3. Place Piece 2 across column 2 row 2, column 3 row 2, column 4 row 2, column 5 row 2.
4. Place Piece 3 across column 8 row 4, column 8 row 5.
5. Place Piece 4 across column 1 row 2, column 1 row 3, column 1 row 4.

Part of the "Four lanes" chapter. The solver certified 120 solving lines with 95% of in-between placements being dead ends, for a difficulty score of 18.3 (grade 4 of 5).