He was a well-known player in Poznań in the 1920s and 1930s. In 1926, he tied for 2nd-3rd in the Poznań chess championship. The same year, he won at the Poznań Chess Club Championship. In 1928, he won again the Poznań chess championship. Wojciechowski represented Poznań at the Polish Team championships (1st at Królewska Huta (Königshütte) 1929, and 2nd at Katowice 1934). He took 16th place in the 3rd Polish Chess Championship at Warsaw 1935 won by Savielly Tartakower, and 11th place in the 4th Polish Championship at Jurata 1937, won again by Tartakower.
He played for Poland on the eighth board (+7 –2 =5) in the 3rd unofficial Chess Olympiad at Munich 1936. The Polish team won the silver medal there. He was a poor man with weak health, and in January 1938 a bad attack of pneumonia killed him.
During the interwar period Wojciechowski was one of the strongest Polish chess masters and won games against players like Dawid Przepiórka, Rudolf Spielmann and Miguel Najdorf. Wojciechowski is however probably best known for his famous combination in a game against Tylkowski at Poznań 1931.
- Litmanowicz, Władysław & Giżycki, Jerzy (1986, 1987). Szachy od A do Z. Wydawnictwo Sport i Turystyka Warszawa. ISBN 83-217-2481-7 (1. A-M), ISBN 83-217-2745-X (2. N-Z)
- "OlimpBase :: Chess Olympiad, Munich 1936, information". Retrieved 2012-02-19.
- "Strangest coincidence ever - or hoax? The case of the Polish Rxb2". Xs4all.nl. 2006-11-08. Retrieved 2012-02-02.
- "Antoni Wojciechowski vs David Przepiorka (1934)". Chessgames.com. Retrieved 2012-02-02.
- "Rudolf Spielmann vs Antoni Wojciechowski (1936)". Chessgames.com. Retrieved 2012-02-02.
- "Miguel Najdorf vs Antoni Wojciechowski (1937)". Chessgames.com. Retrieved 2012-02-02.