Solver-verified route
- Place Piece 1 across column 6 row 5, column 7 row 5, column 6 row 6.
- Place Piece 2 across column 7 row 1, column 7 row 2, column 7 row 3.
- Place Piece 3 across column 6 row 2, column 6 row 3, column 6 row 4.
- Place Piece 4 across column 5 row 4, column 5 row 5.
Part of the "Column craft" chapter. The solver certified 24 solving lines with 96% of in-between placements being dead ends, for a difficulty score of 18.2 (grade 4 of 5).