Here’s a randomly generated cipher of unknown type. All my ID tests got the correct type. Hill-climbing, my special key search, and converging key search all solved it, but they all needed the crib.
QADOQ JIKVM TWWJT OBTRQ JJONL CJKNX NNNQE PPKZS SFIMS PVSXL QFHRA
DIIBT ILZKD XTDLJ ADCQM JIYDI USEZD DIURB VWDXA VACKQ NRELG ADXBR
ATNGB XBATQ QGAVH MBSMT WBNKL ITRJW NDDMN LDYSC OYSXU DDLMA XSFOP
caesar-shifted crib: JXJJRXGJYYJWUTTW