Mathematical workbench · β
6/9 constructor
Choose two pairs with the same tf, transform them through F7+, and immediately obtain one of the two parallel 6/9 classes.
E1 105x264y840
A1 369
B1 681
C265
D1
E1 105
F2 209
G1 945
H529
J841
a brick-red frame marks a value that is a perfect square
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Magic invariantall 8 line sums agree
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Declared maskABDFHJ · confirmed
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Actual result6/9 squares
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Nondegeneracy9 pairwise-distinct entries