Level 181 solution

Solver-verified route

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

Part of the "Deep board" chapter. The solver certified 720 solving lines with 95% of in-between placements being dead ends, for a difficulty score of 19.3 (grade 4 of 5).