Solver-verified route
- Place Piece 1 across column 6 row 4, column 6 row 5.
- Place Piece 2 across column 6 row 6, column 5 row 7, column 6 row 7.
- Place Piece 3 at column 5, row 4.
- Place Piece 4 across column 4 row 6, column 4 row 7, column 4 row 8.
Part of the "Column craft" 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).