Solver-verified route
- Place Piece 1 across column 7 row 4, column 7 row 5.
- Place Piece 2 across column 5 row 5, column 6 row 5, column 5 row 6, column 6 row 6.
- Place Piece 3 across column 7 row 6, column 6 row 7, column 7 row 7.
- Place Piece 4 across column 7 row 2, column 6 row 3, column 7 row 3, column 6 row 4.
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 17.5 (grade 3 of 5).