Level 222 solution

Solver-verified route

1. Place Piece 1 across column 5 row 6, column 6 row 6, column 7 row 6.
2. Place Piece 2 across column 4 row 4, column 5 row 4, column 6 row 4, column 6 row 5.
3. Place Piece 3 at column 5, row 5.
4. Place Piece 5 at column 8, row 6.
5. Place Piece 4 across column 3 row 2, column 4 row 2, column 3 row 3, column 4 row 3.
6. Place Piece 6 across column 4 row 5, column 3 row 6, column 4 row 6.

Part of the "Final columns" chapter. The solver certified 1000+ solving lines with 80% of in-between placements being dead ends, for a difficulty score of 18.2 (grade 4 of 5).