Baiocchi Figures for Pentomino-Hexomino Pairs

Introduction

A pentomino is a plane figure formed by joining 5 equal squares edge to edge. There are 12 pentominoes:

A hexomino is a plane figure formed by joining 6 equal squares edge to edge. There are 35 hexominoes:

A Baiocchi figure is a figure formed by joining copies of a polyform and having the maximal symmetry for the polyform's class. For polyominoes, that means square symmetry, or 4-way rotary with reflection.

We can also define Baiocchi Figures for sets of polyominoes. Here I show minimal known Baiocchi Figures for pairs consisting of a pentomino and a hexomino. The figures must use at least one copy of each polyomino.

See also

  • Baiocchi Figures for Pentomino Pairs
  • Baiocchi Figures for Hexomino Pairs
  • Baiocchi Figures for Tetromino-Pentomino Pairs
  • Baiocchi Figures for Tetromino-Hexomino Pairs
  • Solutions

    The figures in the table show the areas of the solutions.

      1234567891011121314151617181920212223242526272829303132333435
    F4444444444444444324444443232444444444444444441213241324444324444214432
    I2136444432413244444444444432444444443244444444323244444444322844494444
    L2832213232443244324444443228163244444444324444323232324432321644444432
    N4444444132444441443741324432442144444444324444323232323632443632444444
    P3232323232321644323232321616213232363244213236213236324132162828443632
    T4444444444444444444444444444444444443244444444322144444444444444444429
    U3221444432443244444444443232444432443244324444414444324421323244444444
    V4444444432444444444444444432443244444432444444323244324421324444444444
    W4444444432444444444444444432443232443244324444324444444444324432444444
    X2944294432294453292929292944682944442944442929292929446429322929292921
    Y3232324444444444322144444428444432444444444432443241324444323244444432
    Z4444444432444444444444444444444444444444444444444444444441444444444444

    16 Cells

    21 Cells

    28 Cells

    29 Cells

    32 Cells

    36 Cells

    37 Cells

    41 Cells

    44 Cells

    49 Cells

    53 Cells

    64 Cells

    68 Cells

    Last revised 2026-07-01.


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    George Sicherman [ HOME | MAIL ]