source
				 
			string  | question
				 
			string  | answer
				 
			string  | rating
				 
			int64  | 
|---|---|---|---|
	puzzles4_forum_hardest_1905 
 | 
	6..2143...5.8.....1....92...16...9.......6.3.3...9...4....2...72....14..........3 
 | 
	678214359952837641143659278416372985589146732327598164864923517235781496791465823 
 | 34 
							 | 
					
	puzzles2_17_clue 
 | 
	.7.....3.9..84.......5....6......9..84..........2.............5.....389..2...4... 
 | 
	578621439936847521412539786253476918841395267697218354389762145764153892125984673 
 | 0 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	.4.......8.71....45.18.4.7......9.....9.8.32..8.3.5.97.7.5.8..1....3..6.......... 
 | 
	246753189897162534531894276365279418719486325482315697673528941154937862928641753 
 | 75 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	..7.65.2....87..........7....2....437...3.1....56.4.....9...4.7.....9...52.7...9. 
 | 
	387465921296871534451293786962157843748932165135684279619328457873549612524716398 
 | 76 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	4...1..9...7...2...5.3.......694...8...18.5..8....3.4.....3...2.6....7..9..8...1. 
 | 
	482517396137698254659324871726945138394186527815273649548731962261459783973862415 
 | 17 
							 | 
					
	01_file1 
 | 
	51.97....6....27.5.....691...5.1..6...12.9...72.5......967..3........49.......... 
 | 
	513978624689142735247356918935417862461289573728563149896724351172835496354691287 
 | 16 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	9...2.6....13...5..8......7.7.1....85...9.4....4..2...1..4.69....6.5..1.........6 
 | 
	937521684461378259285964137679145328523897461814632795152486973346759812798213546 
 | 21 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	48........3....81...73....4..268....8..7.4..2.7..52...7.....6...2.8.7..3....9.2.. 
 | 
	481275936235946817697318524312689745856734192974152368743521689129867453568493271 
 | 74 
							 | 
					
	puzzles5_forum_hardest_1905_11+ 
 | 
	.2..7.5..1..6........8.5....9...........9..72...5.69...7..6.2.44......3...3.5.71. 
 | 
	824973561157642893369815427298437156546198372731526948975361284412789635683254719 
 | 7 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	..3.51.6..81.4....4..7.....3..1..7....6..5.3..2......8.3.51..9......9.....963.1.. 
 | 
	273951864681243975495768321358192746716485239924376518832514697167829453549637182 
 | 25 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	...1..5.3..5..82.1.......8...82...3.9...4.....4...7..6..23...1.7.........6..9...5 
 | 
	876124593395768241214935687658219734927643158143587926582376419739451862461892375 
 | 41 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	.72...1........3.53...1..2...84.........2.5...9...7.6..4...8.....79.....6...5...3 
 | 
	572384196914672385386519724768495231431826579295137468143268957857943612629751843 
 | 60 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	1.........2.1..7.3..6.2..1..64.....53..6...7.....8.4....3..9...6..3...2..8..5...9 
 | 
	197834652428165793536927814864791235315642978972583461253479186649318527781256349 
 | 13 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	.2.1..7..5......4..6..8...3..9.6.38.........9.8...962....6..1...9..3...27....5... 
 | 
	324156798518973246967284513459762381276318459183549627842697135695431872731825964 
 | 24 
							 | 
					
	puzzles1_unbiased 
 | 
	17..93......1.4.7....75.2....9542..7..3........48...5.....7..134..3....8.5..2...4 
 | 
	176293845235184679948756231619542387583617492724839156862475913497361528351928764 
 | 2 
							 | 
					
	01_file1 
 | 
	49......26.1..2.........91....2.43.1..3.16.94.4.93.62.5..4.1...7...6............. 
 | 
	495173862681592437372648915956284371823716594147935628539421786714869253268357149 
 | 48 
							 | 
					
	puzzles1_unbiased 
 | 
	..93.1..7....8.2...83....5......7.28..4.58.......3.5.6.6......2.....9.1.9.8.2.36. 
 | 
	529341687146785239783296451635417928294658173817932546461573892352869714978124365 
 | 2 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	....8.....6.5..8....3..9.5......13....9.2...1...95..2...8..2.3.7..4.....4.2..5.1. 
 | 
	527186943961534872843279156276841395359627481184953627618792534735418269492365718 
 | 20 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	.1.82......517..8......6..14...98..3......6...2.5...9.3.......2..7...4...9..8..7. 
 | 
	714825369635179284982346751456798123879231645123564897348657912567912438291483576 
 | 22 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	..5....1.2.....8...6.3....9..7.8.2..3....7.58.9.6........4..1...4..31.......69..4 
 | 
	985724613273196845164358729457983261316247958892615437538472196649831572721569384 
 | 26 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	..95...47.1...4.......792........85...3.5..746..4.7..........2.9..3.......4..5.93 
 | 
	869523147712684539345179268497231856123856974658497312536948721971362485284715693 
 | 45 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	..21..4..1.......394.....1.....6..3......8..75..2..9...9.5..3....4..7..6..5.3..8. 
 | 
	732189465158642793946375812289764531413958627567213948891526374324897156675431289 
 | 25 
							 | 
					
	01_file1 
 | 
	..91...53.........5...9.2.....6......9.5...34..3..7.6.9..3...41..1.8.....34...... 
 | 
	479128653312765498586493217147639582698512734253847169925376841761984325834251976 
 | 27 
							 | 
					
	puzzles1_unbiased 
 | 
	...64..383....5.....5..1..44.7...98...98.7.16......3..6547......1..............9. 
 | 
	271649538346285179895371264437156982529837416168924357654793821912568743783412695 
 | 0 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	7...95.2..5..4......6.....5...1.......8......5...23..7.8...2.93...4...722...395.. 
 | 
	713895624859246731426371985972184356138657249564923817687512493395468172241739568 
 | 33 
							 | 
					
	puzzles1_unbiased 
 | 
	798..2...1.....4.34.......8.2.1.9..75..2....4.6...35....7..6......9............31 
 | 
	798342156152687493436591278324159867579268314861473529217836945643915782985724631 
 | 3 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	..4.9.....1.7..8..2.7..56........17...5...3...7.3....89....2....6.1...8.....4...6 
 | 
	534896721619723845287415693346589172895271364172364958958632417463157289721948536 
 | 29 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	.6...7...5...3...8..14...2.....489.....35....8....6.54.9...34....2....1.6...7...5 
 | 
	268197543547632198931485627753248961416359782829716354195823476372564819684971235 
 | 9 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	....5...68...7.2...6...9.75......6...7.9...242.6.4..9..4..9..52.....43....1..2... 
 | 
	427153986859476231163829475984235617375961824216748593648397152792514368531682749 
 | 24 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	..7.5.6...9.....5465......1.....8..3.7..4.9....95...4..2..7.4.......3..8..14...2. 
 | 
	237154689198632754654789231465928173872341965319567842923875416746213598581496327 
 | 10 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	........5.6..92.1...76..9....2..64..6..7...5.3...4....9....8.3..1.4....8..8.6.2.. 
 | 
	439817625865392714127654983582936471694781352371245896946528137213479568758163249 
 | 7 
							 | 
					
	puzzles1_unbiased 
 | 
	.9.6.5241...........2.1.59..8.2..........4..3..3.7..8........6.7....8.545.6..1.2. 
 | 
	397685241815492736462317598184236975279854613653179482948523167721968354536741829 
 | 0 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	.9...16....73.....5...4..7......9..2.1..8..6...46..9..8......1..7..5.4....2..3..6 
 | 
	398571624467328591521946873685739142719284365234615987853467219976152438142893756 
 | 30 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	.5..6.....235....81....35...72..54...1...2.5.....4....73..9..8...1..73.........47 
 | 
	957468231423519768168723594872935416614872953395146872736294185541687329289351647 
 | 7 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	7.1....42.8..1.3..3.4.........9.......3.814.....64......84.275........8.4...781.. 
 | 
	751369842689214375324857691846923517593781426217645938168492753975136284432578169 
 | 19 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	.6...9.7...93.......5.4............86....1.9.....3.2....6..7.5..7......2.1..8...4 
 | 
	461259873729318546385746129147592638632871495958634217896427351574163982213985764 
 | 69 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	..8..97...1......22......5..5.....144..9.......7.438.....39.6.......6.....687.... 
 | 
	538129746614735982279468153952687314483912567167543829825394671791256438346871295 
 | 48 
							 | 
					
	01_file1 
 | 
	...2..5..5.37...92.1..9..7...4..3.......5......6....13...5.9..79.7.2.15..3..1.... 
 | 
	679238541543761892218495376184973265392156784756842913421589637967324158835617429 
 | 30 
							 | 
					
	01_file1 
 | 
	...1...6...9...1...167..9.2...6.253..3...........3.4..7.2..96.....3.72...9..6..1. 
 | 
	427195368359826174816743952948672531631458729275931486782519643164387295593264817 
 | 17 
							 | 
					
	01_file1 
 | 
	.4.96.....65.749.8..75...4..78..5......6...9.6...8.5.7..........9..4.3...8...92.. 
 | 
	843961752165274938927538146278195463354627891619483527431752689792846315586319274 
 | 19 
							 | 
					
	puzzles1_unbiased 
 | 
	...84.1....86..2..3....79......8..9..8...973...5.....2.5......7746.3.....31..4... 
 | 
	927845163518693274364127958173582496682419735495376812859261347746938521231754689 
 | 3 
							 | 
					
	puzzles1_unbiased 
 | 
	.3.8.59......74...25..9.....96.....45...6.13...4...62.76.581....4.....5......3... 
 | 
	437815962689274315251396748196732584528469137374158629762581493943627851815943276 
 | 0 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	4...5.6....9.6...2.6...1.4..46..5.1.7..8......5...4.2..3.54.2.....13..5......2... 
 | 
	487253691319468572265791348946325817723819465158674923631547289892136754574982136 
 | 7 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	38.5......2..48.3...4.....516.....2...83...5...3..17......9...6..28...4..3...7... 
 | 
	381529467526748139794136285167954328948372651253681794415293876672815943839467512 
 | 43 
							 | 
					
	puzzles1_unbiased 
 | 
	3.........154863..6....1.7..51.....9...1....44...2..3.....7...8..7..59...4.9.8.5. 
 | 
	394752186715486392628391475251843769983167524476529831539674218867215943142938657 
 | 0 
							 | 
					
	01_file1 
 | 
	23...........4.2......6.3..7.9.35....1.9...7..52....3..73..251.......7.99.51...2. 
 | 
	236571894597843261148269357789635142314928675652714938873492516421356789965187423 
 | 41 
							 | 
					
	puzzles0_kaggle 
 | 
	...28..3519..6.7.2..8.3.4..3.5.....7.6..94..1.4....8..25491...37...42.1..8.7...9. 
 | 
	476289135193465782528137469315826947867594321942371856254918673739642518681753294 
 | 0 
							 | 
					
	puzzles1_unbiased 
 | 
	...8..1...3.......4....2.78..32......5...8......51.927..96.......6.2..3...7.94..5 
 | 
	762839154138457296495162378973246581251978463684513927319685742546721839827394615 
 | 1 
							 | 
					
	puzzles1_unbiased 
 | 
	.26..4.1.5.91...4..4..3..........6...9.473..2...81...3..1.58...48.2....7......... 
 | 
	826794315539182746147635829314529678698473152752816493971358264485261937263947581 
 | 1 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	.....1.3..4..8.9.17....9...4............5...2.6.9..1.5.9...56.8..6....2...486.... 
 | 
	659241837342786951718539264425178396971653482863924175297315648186497523534862719 
 | 46 
							 | 
					
	puzzles0_kaggle 
 | 
	8.4.57..25..436...96.8....7..1....4.....1.69832..9...5....43.1..37..8..9.5627.... 
 | 
	814957362572436981963821457691785243745312698328694175289543716437168529156279834 
 | 0 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	.6...2.4....34.6....5...3.2..92..13....18....21...3..4.......7.17...64..9.......6 
 | 
	863912547721345689495678312549267138637184925218593764356429871172856493984731256 
 | 25 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	1...8..7...8..2..1.3.6.18....3.2.1..94......7...4....65..........2.6.7.....2...95 
 | 
	124385679698742531735691842863927154941856327257413986579134268482569713316278495 
 | 23 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	..5....643....6....6..5.9...5..2.8....17.....68..9.2.....8..1......1...2.1.5.2.89 
 | 
	895231764347986521162457938759324816231768495684195273926843157578619342413572689 
 | 39 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	..23...1..4...29..3...7...26..9......7.5.......4..7..94.3..1..78.........57.6.8.. 
 | 
	982346715746152938315879462628914573179538246534627189493281657861795324257463891 
 | 21 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	.8.....72..2.7....4..9..8.68..6..7.9.3.....6......5....68..91.41.........491..6.. 
 | 
	986451372312876495475923816851642739234798561697315248768239154123564987549187623 
 | 4 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	..3.7..62.1.6.....6....97.......7.1..7..82.5.8..9..2.72...9.4....5..4..6.3....... 
 | 
	943578162712643598658219734529467813374182659861935247286391475195724386437856921 
 | 54 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	6.8.7.3..............2.8..17.46...39..3.4.....6...74..1........3.6.9.7...8.....53 
 | 
	658971342291463587437258961714625839523849176869137425175386294346592718982714653 
 | 50 
							 | 
					
	puzzles1_unbiased 
 | 
	.6.....9..85.9.3....142........1.5.6....4897........3.1..5.....6...7..2.4.96...53 
 | 
	364851297285796314791423685832917546516348972947265831128534769653179428479682153 
 | 1 
							 | 
					
	puzzles1_unbiased 
 | 
	..1.8.......6..1.2.....5.6.8......7.1.......32.547.8...3.51...4......7.9.82.4.6.. 
 | 
	621384597358697142974125368843261975167958423295473816739516284416832759582749631 
 | 0 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	.2.9....7..5..736.....3......8....4.6....85...9.7....12...7...4.1..49......2..1.. 
 | 
	823965417945127368761834259158693742672418593394752681286571934517349826439286175 
 | 16 
							 | 
					
	01_file1 
 | 
	....9.7....85...9...2.......3..7.5..5....6.17.....19....36...7.6...1.3.9.9573..6. 
 | 
	361294758748563192952187634134978526589326417276451983813649275627815349495732861 
 | 7 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	9..8...2......3..9.36..2..5.9..28.4....4....74...3.2......156..2..38..7..1....... 
 | 
	954867321872153469136942785691728543523496817487531296749215638265389174318674952 
 | 19 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	..7....5.5..6...43.....5..1..4.3.18....86.4..8....9.364..9......2.......9...5..64 
 | 
	147392658592618743683475921264537189359861472871249536435926817726184395918753264 
 | 30 
							 | 
					
	01_file1 
 | 
	.....53...7.1.34.9.9..4..1...95.47......31......9....1..7.5..9......7..3.62....4. 
 | 
	641895372578123469293746815319564728786231954425978631837452196954617283162389547 
 | 30 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	9.5.3....8..9....7.2...89......94.6..5......16..1..7...3..4.1..1..3...7...2...8.3 
 | 
	915437628864921537327568914271894365459673281683152749738249156196385472542716893 
 | 50 
							 | 
					
	puzzles0_kaggle 
 | 
	...12.5..6594...2..7.....984..9..1....8.14.76.32.5....915..7...3......45...23.6.. 
 | 
	843129567659478321271563498467982153598314276132756984915647832326891745784235619 
 | 0 
							 | 
					
	01_file1 
 | 
	..8.....7.3512.8...6...85...5....39....8..7...79..5..6.9..6..5.3.....9...8....6.3 
 | 
	918456237735129864264378519851647392623891745479235186192763458346582971587914623 
 | 10 
							 | 
					
	01_file1 
 | 
	...71..3..12..5.8.7....2..5.6........9..3....3....1..8.......53.7325.81.8..1..7.2 
 | 
	589716234612345987734982165461528379298637541357491628126879453973254816845163792 
 | 4 
							 | 
					
	puzzles1_unbiased 
 | 
	2..8....65...3...2.8..7..1.......6..8.4..5..7..7.1..4...6..72.8............4..179 
 | 
	273851496561934782489672315932748651814365927657219843146597238798123564325486179 
 | 1 
							 | 
					
	01_file1 
 | 
	.........2.....46.7.......18.6.453.....8.....14...35...5..816....136..8......4.3. 
 | 
	318496257295178463764532891876945312532817946149623578953781624421369785687254139 
 | 29 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	5..7...2...6..4..3.1............9.822..5..3....1.2..57....4......9..6...7..3....5 
 | 
	543761829976284513812935674357619482294578361681423957135847296429156738768392145 
 | 10 
							 | 
					
	01_file1 
 | 
	..1.7..4.92.....174.....6.9...........672.9....4...16.6..4..7..17..354.........2. 
 | 
	361579248928643517457281639235196874816724953794358162683412795172935486549867321 
 | 35 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	7......1.......9..9.3..4..22.5.4...889.5........2.8........54..5.24....3.7..3..6. 
 | 
	728659314641382957953174682265947138894513726137268549386725491512496873479831265 
 | 61 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	1..3..2...68......3..1..9.8.43..5...2..9..3....7.....4...4...324............914.. 
 | 
	175389246968742513324156978643825791281974365597613824759468132412537689836291457 
 | 91 
							 | 
					
	01_file1 
 | 
	.5.8.4.2.....95.4....12...........9.6.3...85...8..14..1.92..........85..8..4.921. 
 | 
	951874623237695148486123975514382796623947851798561432179256384342718569865439217 
 | 45 
							 | 
					
	01_file1 
 | 
	.....48.2.......49...9..15.63..52.....8..9.....2.8...1.8..412.5.1.5.849.......... 
 | 
	591634872726815349843927156634152987158379624972486531389741265217568493465293718 
 | 38 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	.....9..4..6.5..8....7..9....26....85...2....16...3.2.8.....1.6.45......6.1.3..5. 
 | 
	357289614916354782428761935732615498584927361169843527893572146245196873671438259 
 | 27 
							 | 
					
	01_file1 
 | 
	7.91.......8..9.1.......2......2.1...95.8....21.7.59...8...7....712..6.3..25..... 
 | 
	739152846628439517154876239867923154495681372213745968986317425571294683342568791 
 | 12 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	...1..9..9...75.2...6..4..7..4..81..6....3..8.8.5....9.6...9..33...5.7....2..7... 
 | 
	875162934943875621126394587734928156659713248281546379567289413398451762412637895 
 | 46 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	..92..8..2...1..5....3.....1....32.6..3.6...5...1...3...2..43.7.7...1.6.6..7...2. 
 | 
	739256841268419753415387692157943286943862175826175439582694317374521968691738524 
 | 37 
							 | 
					
	01_file1 
 | 
	3.4...2.1.......8...2.3..7.....62.3....15....21...4...5..4....3.41..36..6..5...2. 
 | 
	364978251795241386182635974457862139936157842218394567529486713841723695673519428 
 | 52 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	3.....5...8.7...2.5.2.8.7.1..81....54....9..6....4.....3..2.8....14...5......6..9 
 | 
	376912584189754623542683791298167435457839216613245978934521867761498352825376149 
 | 18 
							 | 
					
	01_file1 
 | 
	3...1.5....1....69...7......47......5.3.27..12..45....7.23.....1..5..2....4..23.. 
 | 
	326914587871235469495786123647193852583627941219458736752341698138569274964872315 
 | 30 
							 | 
					
	puzzles1_unbiased 
 | 
	9..8.....3.2.4......893.5.........7..3.6.7.5.6...1...9.5....13....3.842......6... 
 | 
	915862743362745918478931562584293671139687254627514389856429137791358426243176895 
 | 0 
							 | 
					
	01_file1 
 | 
	15..8.43....54..8......17..3.187.....851.....74...3...5....8.....7.3......4..596. 
 | 
	156287439973546182428391756391874625685129347742653891519468273867932514234715968 
 | 29 
							 | 
					
	puzzles1_unbiased 
 | 
	.6.....32..9...4...53...9.......72967...6....5...9..1......8....4.7.2..33...1..4. 
 | 
	867941532219375468453826971134587296792163854586294317675438129941752683328619745 
 | 1 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	9..8..7..1...5..6...2..1.3......4..3.9..654..4..1...5...9....825....8.4..4....3.. 
 | 
	964823715183957264752641839625784193891365427437192658319476582576238941248519376 
 | 23 
							 | 
					
	01_file1 
 | 
	.7..45...1..7.3......6...7..5.1..6..3.45...1.....37...7.6..12.85....6.....14..... 
 | 
	973245186165783492428619375857194623394562817612837954746951238589326741231478569 
 | 49 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	92.5....3..5.63.........5....96.53..5.23..9......4..7......1.....39..6......3...8 
 | 
	926574813815263749734198526479625381582317964361849275698751432143982657257436198 
 | 37 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	....6.........48...1.7....2..7.56.4.1..9....7.2.......2.....5....13....993..8.7.. 
 | 
	492863175756124893813795462387256941145938627629471358278619534561347289934582716 
 | 35 
							 | 
					
	01_file1 
 | 
	.1.98..4.9..3.18....3.46...1..........4..8...3.8...27......4.9.6..19......9.63..8 
 | 
	512987643946321857873546912125679384794238561368415279231854796687192435459763128 
 | 4 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	....5.1..2..9...3..1...4.....7.....5.....74..8..2...67.86....2..326....99........ 
 | 
	469853172275916834318724956697438215523167498841295367186549723732681549954372681 
 | 21 
							 | 
					
	puzzles0_kaggle 
 | 
	9.3..7.....1.5.4.2.4.6.9.7.8.2...9...698...14.5...6.3.48.91.7.63....2...2......81 
 | 
	923147658671358492548629173832471965769835214154296837485913726316782549297564381 
 | 0 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	..8..6.....7.5.9..1..7....4.....52...1.2....7....8..3.2...6.3....18....24......9. 
 | 
	548926713637451928192738564876315249315249687924687135289564371761893452453172896 
 | 34 
							 | 
					
	puzzles1_unbiased 
 | 
	26..5......7..36...1.6.....4.8..59.7.......36....9..14..28.9...54..7....1........ 
 | 
	264751398857923641913648752438165927791482536625397814372819465549276183186534279 
 | 2 
							 | 
					
	puzzles4_forum_hardest_1905 
 | 
	.....65..4...8..3...15....8.9.7....27......4...8..59....68..7..3...5.....2...9..1 
 | 
	872436519459187236631592478193764852765928143248315967916843725387251694524679381 
 | 8 
							 | 
					
	01_file1 
 | 
	..3...5..6.9...4..54.....1995.6....41....3.56.3.........14...3.4.....9......27..1 
 | 
	823941567619875423547362819952618374184793256736254198261489735475136982398527641 
 | 28 
							 | 
					
	puzzles1_unbiased 
 | 
	......12.5..91.....98...5.....3.2...3....7.85....9.74.65..74.......5.86.8........ 
 | 
	763548129542913678198726534475382916319467285286195743651874392934251867827639451 
 | 1 
							 | 
					
	01_file1 
 | 
	...1.3.26.1.92.3.73....7...7.9...6...2.69......3..2.1.6...........31..65....7...8 
 | 
	897153426416928357352467891749531682128694573563782914671845239284319765935276148 
 | 46 
							 | 
					
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