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Diary, September 2026



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Tuesday, September 1, 2026

The China Labyrinth puzzle

This evening, I used the laser cutter at TkkrLab to create a puzzle (using a SVG file) based on the The China Labyrinth. Below a picture of the pieces (except for one):

One of the members tried to put the pieces inside the frame where the pieces were cut from, but failed. There are somewhere between 10^20 and 10^22 solutions to the exact covver program that I use to estimate the number of solutions. On August 16, I already developed the program hexapuszleSQ.cpp to generate the input for exact cover program and to generate an SVG file when given the filename of the file with the solutions.


Home | August 2026