All together, these 3 documents are very rich of solving techniques.
IMHO, if interested => download the 3 ... not to miss some essentials.

Jean

Solve TREASURY_1.sm (25 KiB) downloaded 87 time(s).

Solve TREASURY_2.sm (53 KiB) downloaded 72 time(s).

Solve TREASURY_0.sm (116 KiB) downloaded 83 time(s).