Level 100 solution

Solver-verified route

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

Part of the "Corner work" chapter. The solver certified 24 solving lines with 97% of in-between placements being dead ends, for a difficulty score of 15.3 (grade 2 of 5).