File names for daily puzzles from September 2008:
20080901_s4_IQ_u56_i0_0_61_0_0_0_4_31_19__X_noncons_c10_1_621.png
20080902_s3_BRAIN_u40_i0_0_118_0_0_0_0_10_42__either_c0_2_9.png
20080903_s2_THINKER_u17_i0_0_62_0_0_0_0_2_24__boxbreaks_H_c22_0_685.png
20080904_s1_COOL_i0_0_22_0_0_0_0_0_3__X_noncons_c12_4_710.png
20080905_s0_EASY_i0_0_9_0_0_0_0_0_0__c4_11_906.png
20080908_s4_IQ_u45_i0_0_49_0_0_0_2_23_13__noncons_c14_3_275.png
20080909_s3_BRAIN_u31_i0_0_53_0_0_0_0_7_18__either_noncons_c14_5_73.png
20080910_s2_THINKER_u17_i0_0_124_0_0_0_0_2_45__boxbreaks_X_c0_7_971.png
20080911_s1_COOL_i0_0_48_0_0_0_0_0_16__c8_9_177.png
20080912_s0_EASY_i0_0_13_0_0_0_0_0_0__noncons_c14_13_771.png
20080915_s4_IQ_u43_i0_0_132_0_0_0_6_5_47__c0_6_897.png
20080916_s3_BRAIN_u35_i0_0_40_0_0_0_3_6_11__subsets_noncons_c12_14_383.png
20080917_s2_THINKER_u22_i0_0_127_0_0_0_0_2_47__boxbreaks_c0_8_817.png
20080918_s1_COOL_i0_0_98_0_0_0_0_0_35__c0_12_681.png
20080919_s0_EASY_i0_0_8_0_0_0_0_0_0__c3_15_369.png
20080922_s4_IQ_u51_i0_0_44_0_0_0_3_13_8__c6_19_93.png
20080923_s3_BRAIN_u27_i0_0_55_0_0_0_0_2_20__boxbreaks_c20_18_838.png
20080924_s2_THINKER_u25_i0_0_40_0_0_0_0_1_14__one_noncons_c13_10_789.png
20080925_s1_COOL_i0_0_24_0_0_0_0_0_5__noncons_c16_16_666.png
20080926_s0_EASY_i0_0_8_0_0_0_0_0_0__H_c22_17_241.png
20080930_s3_BRAIN_u44_i0_0_28_0_0_0_0_2_7__either_X_noncons_c14_0_695.png