(Bulgarian Chess Archive 1: Bulgarian Championships 1933-1948). History of Bulgarin championships in 1933-1948, always with crosstables and all known games. The games - 955 in all - are unannotated but well diagrammed. All 13 Bulgarian championships of this period (not played in 1939, 1941, 1944) are presented in chronological order, accompanied with photos. Multiple Bulgarian champions between 1933-1948 were Georgi Geshev and Oleg Neikirch, five other players won the championship once. General summaries in the end. Series Bulgarski shakhmaten archiv 1 - Bulgarian Chess Archive 1