Level 250 solution

Solver-verified route

1. Place Piece 1 across column 5 row 5, column 6 row 5, column 7 row 5, column 8 row 5.
2. Place Piece 2 across column 5 row 3, column 5 row 4.
3. Place Piece 6 across column 6 row 3, column 6 row 4.
4. Place Piece 3 at column 4, row 6.
5. Place Piece 7 at column 4, row 7.
6. Place Piece 4 across column 6 row 2, column 7 row 2, column 8 row 2.
7. Place Piece 5 across column 1 row 1, column 1 row 2, column 1 row 3, column 2 row 3.

Part of the "Seven lines" chapter. The solver certified 1000+ solving lines with 77% of in-between placements being dead ends, for a difficulty score of 19.0 (grade 4 of 5).