Pythagorean Square
The psychomatrix, or "Pythagorean Square," is a 3×3 table filled with digits from the birth date. Each cell corresponds to a specific quality, and the number of digits shows how strongly it is expressed. The calculation follows Alexandrov's method.
The content on this site is for entertainment and educational purposes only and does not constitute medical, psychological, or financial advice. The "Pythagorean Square" method (psychomatrix) is a modern, Russian-language method associated with A. F. Alexandrov (1990s books). No direct historical continuity with the ancient Pythagorean school has been established.
How the calculator works
From the birth date, four working numbers are derived. The first is the sum of all date digits (e.g., 15.08.1990: 1+5+0+8+1+9+9+0 = 33). The second is the sum of the first's digits (3+3 = 6). The third is the first minus twice the leading digit of the birth day: for the 15th this is 33 − 2×1 = 31 (the day is taken without a leading zero: 5, not 05). The fourth is the sum of the third's digits (3+1 = 4). If the second or fourth number is 10, 11, or 12, in Alexandrov's method these are "governing" numbers and are not reduced.
Then all digits of the birth date and four working numbers are distributed across cells 1–9. An empty cell means the quality is not innate and needs to be developed; one digit — weak expression; two — normal; three or more — strong. The "Pythagorean Square" method (psychomatrix) is a modern, Russian-language method (A. F. Alexandrov, 1990s); no direct historical continuity with the ancient Pythagorean school has been established.