• Bodhi
• India
• Sodddy
• Soddy spiral
• balanced
• countablegon rep-3-tiles
• dragon15
• hourglass
• semizerp
• semizerp1
• continuum
• Teardrop frac-5-tiles
• Strange frac-4-tiles from radix +-2
• Surprise (six)package
• Moebius
• Construct center of ellipse
• Construct tangent w/o compass
• Angle trisection
• Construct regular heptagon
• Intricate epicyclic syntheses
• Gibbs Unringing
• Binomial surface
• Rectangles cut into (mostly) unequal squares
• Sampled Hilbert squarefiller
• Sampled trianglefilling function
• Sampled Sierpinski halfsquare filler
• Telescope mount porism
• One object or three?
• Scott Kim's four-color puzzle
• Continued fraction arithmetic (text)
• (Hemidemi)SemiRamanujanoid identities
• Expensive cube puzzle
• Feedbag
• Negative feedbag