First things first, jigidi changed the code. Breakpoints are now 1123 and 1124, variable has changed from a.G to a.C

Works like a charm… means, follow Dan Q’s instructions.
Start with 1 and 2 under “How can I do this”. Step 3 has changed to 1123. Set the breakpoint. Hit “refresh” in the Jigidi. Code will run to the breakpoint 1123. Hit the run symbol in the debugger (small triangle on the right upper side). Code will run to the same breakpoint again. Click on the breakpoint 1123. Blue mark will disappear. Set a breakpoint at 1124. Hit run in the debugger again. Code will run to breakpoint 1124.
In the left lower corner of the debugger you see >>.
(everything as described by Dan Q step 4, 5 and the update 2021-09-22)
Enter d = a.C and hit return. Press play in the debugger again. Code runs to the end, all the puzzle piece are stapled. Hit F12 to close the debugger.
Take a look at the video from Dan Q, it will explain what you have to do with the stapled pieces.