Solver-verified route
- Place Piece 1 at column 2, row 7.
- Place Piece 2 across column 2 row 5, column 1 row 6, column 2 row 6.
- Place Piece 3 across column 3 row 5, column 4 row 5.
- Place Piece 4 across column 3 row 6, column 4 row 6, column 3 row 7, column 4 row 7.
Part of the "Corner work" chapter. The solver certified 72 solving lines with 95% of in-between placements being dead ends, for a difficulty score of 17.7 (grade 3 of 5).