Solver-verified route
- Place Piece 1 across column 5 row 1, column 6 row 1, column 5 row 2.
- Place Piece 2 across column 6 row 2, column 6 row 3, column 7 row 3.
- Place Piece 3 across column 2 row 1, column 2 row 2, column 2 row 3.
- Place Piece 4 at column 3, row 2.
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 17.1 (grade 3 of 5).