Solver-verified route
- Place Piece 1 at column 5, row 2.
- Place Piece 2 at column 5, row 5.
- Place Piece 3 across column 6 row 2, column 6 row 3, column 7 row 3, column 7 row 4.
- Place Piece 4 across column 5 row 3, column 5 row 4, column 6 row 4, column 6 row 5.
Part of the "Column craft" chapter. The solver certified 24 solving lines with 95% of in-between placements being dead ends, for a difficulty score of 17.5 (grade 3 of 5).