After the war he won the London Tournament in 1946 and it looked for a while as though he might challenge again for the World Championship. However after some impressive play in the couple of years following the war, he then began to look past his best. Euwe became interested in electronic data processing and was appointed as Professor of Cybernetics in 1954.
Subalit matapos ang ilang mga kahanga-play sa ilang taon na ang mga sumusunod na mga digmaan, siya pagkatapos ay nagsimula sa hitsura ng mga nakaraang kanyang pinakamahusay. Euwe naging interesado sa electronic data processing at noon ay hinirang bilang Professor ng kibernetika sa 1954.