The formula for a unit circle is \(x^{2} + y^{2} = 1\)

Hence this puzzle, XX + YY = ONE

Solutions are below the image.

SPOILER SOLUTIONS!

XX_first	YY_second	ONE_third
44	88	132
55	77	132
77	55	132
88	44	132
55	88	143
66	77	143
77	66	143
88	55	143
66	88	154
88	66	154
77	88	165
88	77	165