Solver-verified route
- Place Piece 1 across column 5 row 3, column 4 row 4, column 5 row 4, column 4 row 5.
- Place Piece 2 across column 3 row 7, column 4 row 7, column 5 row 7.
- Place Piece 3 at column 5, row 5.
- Place Piece 4 across column 3 row 5, column 3 row 6.
Part of the "Column craft" chapter. The solver certified 72 solving lines with 94% of in-between placements being dead ends, for a difficulty score of 16.5 (grade 3 of 5).