ikarus/lab/sudoku-hard.txt

("grid"
 "400000805"
 "030000000"
 "000700000"
 "020000060"
 "000080400"
 "000010000"
 "000603070"
 "500200000"
 "104000000")


("grid"
 "520006000"
 "000000701"
 "300000000"
 "000400800"
 "600000050"
 "000000000"
 "041800000"
 "000030020"
 "008700000")


("grid"
 "600000803"
 "040700000"
 "000000000"
 "000504070"
 "300200000"
 "106000000"
 "020000050"
 "000080600"
 "000010000")


("grid"
 "480300000"
 "000000071"
 "020000000"
 "705000060"
 "000200800"
 "000000000"
 "001076000"
 "300000400"
 "000050000")


("grid"
 "000014000"
 "030000200"
 "070000000"
 "000900030"
 "601000000"
 "000000080"
 "200000104"
 "000050600"
 "000708000")


("grid"
 "000000520"
 "080400000"
 "030009000"
 "501000600"
 "200700000"
 "000300000"
 "600010000"
 "000000704"
 "000000030")


("grid"
 "602050000"
 "000003040"
 "000000000"
 "430008000"
 "010000200"
 "000000700"
 "500270000"
 "000000081"
 "000600000")


("grid"
 "052400000"
 "000070100"
 "000000000"
 "000802000"
 "300000600"
 "090500000"
 "106030000"
 "000000089"
 "700000000")


("grid"
 "602050000"
 "000004030"
 "000000000"
 "430008000"
 "010000200"
 "000000700"
 "500270000"
 "000000081"
 "000600000")


("grid"
 "092300000"
 "000080100"
 "000000000"
 "107040000"
 "000000065"
 "800000000"
 "060502000"
 "400000700"
 "000900000")


("grid"
 "600302000"
 "050000010"
 "000000000"
 "702600000"
 "000000054"
 "300000000"
 "080150000"
 "000040200"
 "000000700")


("grid"
 "060501090"
 "100090053"
 "900007000"
 "040800070"
 "000000508"
 "081705030"
 "000050200"
 "000000000"
 "076008000")


("grid"
 "005000987"
 "040050001"
 "007000000"
 "200048000"
 "090100000"
 "600200000"
 "300600200"
 "000009070"
 "000000500")


("grid"
 "306070000"
 "000000051"
 "800000000"
 "010405000"
 "700000600"
 "000200000"
 "020000040"
 "000080300"
 "000500000")


("grid"
 "100000308"
 "070400000"
 "000000000"
 "203010000"
 "000000095"
 "800000000"
 "050600070"
 "000080200"
 "040000000")


("grid"
 "600302000"
 "040000010"
 "000000000"
 "702600000"
 "000000054"
 "300000000"
 "080150000"
 "000040200"
 "000000700")


("grid"
 "000030090"
 "000200001"
 "050900000"
 "000000000"
 "102080406"
 "080500020"
 "075000000"
 "401006003"
 "000004060")


("grid"
 "450000030"
 "000801000"
 "090000000"
 "000050090"
 "200700000"
 "800000000"
 "010040000"
 "000000702"
 "000600800")


("grid"
 "023700006"
 "800060590"
 "900000700"
 "000040970"
 "307096002"
 "000000000"
 "500470000"
 "000002000"
 "080000000")


("grid"
 "008400030"
 "000300000"
 "900001574"
 "790008000"
 "000007005"
 "140000020"
 "009060002"
 "050000400"
 "000090056")


("grid"
 "098010000"
 "200000060"
 "000000000"
 "000302050"
 "084000000"
 "000600000"
 "000040809"
 "300500000"
 "000000100")


("grid"
 "002470058"
 "000000000"
 "000001040"
 "000020009"
 "528090400"
 "009000100"
 "000000030"
 "300007500"
 "685002000")


("grid"
 "400000805"
 "030000000"
 "000700000"
 "020000060"
 "000050400"
 "000010000"
 "000603070"
 "500200000"
 "109000000")


("grid"
 "020300000"
 "063000005"
 "800000001"
 "500009030"
 "000700000"
 "000100008"
 "087900260"
 "000006070"
 "006007004")


("grid"
 "100000709"
 "040007200"
 "800000000"
 "070010060"
 "300000005"
 "060040020"
 "000000008"
 "005300070"
 "702000046")


("grid"
 "400000300"
 "000802000"
 "000700000"
 "000100087"
 "340000000"
 "600000000"
 "500060000"
 "000010400"
 "082000000")


("grid"
 "000000071"
 "020800000"
 "000403000"
 "700060050"
 "000200300"
 "900000000"
 "600070000"
 "080000400"
 "000050000")


("grid"
 "600302000"
 "040000080"
 "000000000"
 "702600000"
 "000000054"
 "300000000"
 "080150000"
 "000080200"
 "000000700")


("grid"
 "047080001"
 "000000000"
 "000600700"
 "600003570"
 "000005000"
 "010060000"
 "280040000"
 "090100040"
 "000020690")


("grid"
 "000000801"
 "700200000"
 "000506000"
 "000700050"
 "010000300"
 "080000000"
 "500000020"
 "040080000"
 "600030000")


("grid"
 "380600000"
 "009000000"
 "020030510"
 "000005000"
 "030010060"
 "000400000"
 "017050080"
 "000000900"
 "000007032")


("grid"
 "000500000"
 "000000506"
 "970000020"
 "004802000"
 "250100030"
 "080030000"
 "000004070"
 "013050090"
 "020003100")


("grid"
 "020000000"
 "305062009"
 "068000300"
 "050000000"
 "000640802"
 "004700900"
 "003000001"
 "000006000"
 "170430000")


("grid"
 "080040000"
 "300000010"
 "000000020"
 "005000406"
 "900100800"
 "200000000"
 "000309000"
 "060000500"
 "000200000")


("grid"
 "008090100"
 "060500020"
 "000006000"
 "030107050"
 "000000009"
 "004000300"
 "050000200"
 "070003080"
 "200700004")


("grid"
 "400000508"
 "030000000"
 "000700000"
 "020000060"
 "000050800"
 "000010000"
 "000603070"
 "500200000"
 "108000000")


("grid"
 "100000308"
 "060400000"
 "000000000"
 "203010000"
 "000000095"
 "800000000"
 "050600070"
 "000080200"
 "040000000")


("grid"
 "100006080"
 "064000000"
 "000040007"
 "000090600"
 "070400500"
 "500070100"
 "050000320"
 "300008000"
 "400000000")


("grid"
 "249060003"
 "030000200"
 "800000005"
 "000006000"
 "000200000"
 "010040820"
 "090500700"
 "004000001"
 "070003000")


("grid"
 "000800009"
 "087300040"
 "600700000"
 "008500970"
 "000000000"
 "043007500"
 "000003000"
 "030001450"
 "400002001")


("grid"
 "000501000"
 "090000800"
 "060000000"
 "401000000"
 "000070090"
 "000000030"
 "800000105"
 "000200400"
 "000360000")


("grid"
 "000000801"
 "600200000"
 "000705000"
 "000600020"
 "010000300"
 "080000000"
 "200000070"
 "030080000"
 "500040000")


("grid"
 "047600050"
 "803000002"
 "000009000"
 "000805006"
 "000100000"
 "602400000"
 "078000510"
 "006000040"
 "090004007")


("grid"
 "000007095"
 "000001000"
 "860020000"
 "020073008"
 "500000060"
 "003004900"
 "305000417"
 "240000000"
 "000000000")


("grid"
 "040500000"
 "800090030"
 "076020000"
 "014600000"
 "000009007"
 "000003600"
 "001004050"
 "060000003"
 "007100200")


("grid"
 "083400000"
 "000070050"
 "000000000"
 "040108000"
 "000000027"
 "000300000"
 "206050000"
 "500000800"
 "000000100")


("grid"
 "009000003"
 "000009000"
 "700000506"
 "006500400"
 "000300000"
 "028000000"
 "300750600"
 "600000000"
 "000120308")


("grid"
 "026039000"
 "000600001"
 "900000700"
 "000004009"
 "050000200"
 "008500000"
 "300200900"
 "400007620"
 "000000004")


("grid"
 "203080000"
 "800700000"
 "000000100"
 "060507000"
 "400000030"
 "000100000"
 "000000082"
 "050000600"
 "010000000")


("grid"
 "600302000"
 "010000050"
 "000000000"
 "702600000"
 "000000084"
 "300000000"
 "080150000"
 "000080200"
 "000000700")


("grid"
 "100000900"
 "064001070"
 "070040000"
 "000300000"
 "308900500"
 "007000020"
 "000060709"
 "000004010"
 "000129030")


("grid"
 "000000000"
 "900000084"
 "062300050"
 "000600045"
 "300010006"
 "000900070"
 "000100000"
 "405002000"
 "030800009")


("grid"
 "020000593"
 "800500460"
 "940060008"
 "002030000"
 "060080730"
 "700200000"
 "000040380"
 "070000600"
 "000000005")


("grid"
 "904005000"
 "250600100"
 "310000008"
 "070009000"
 "400260000"
 "001470000"
 "700000002"
 "000300806"
 "040000090")


("grid"
 "000520000"
 "090003004"
 "000000700"
 "010000040"
 "080045300"
 "600010008"
 "702000000"
 "008000032"
 "040080010")


("grid"
 "530020900"
 "024030050"
 "009000000"
 "000010827"
 "000700000"
 "000098100"
 "000000000"
 "006400009"
 "102050430")


("grid"
 "100007860"
 "007008010"
 "800200009"
 "000000002"
 "400010000"
 "009005000"
 "608000000"
 "000050900"
 "000009304")


("grid"
 "000050001"
 "100000070"
 "060000080"
 "000004000"
 "009010300"
 "000596020"
 "080062007"
 "007000000"
 "305070200")


("grid"
 "047020000"
 "800001000"
 "030000902"
 "000005000"
 "600810050"
 "000040000"
 "070000304"
 "000900010"
 "400270800")


("grid"
 "000000940"
 "000090005"
 "300005070"
 "080400100"
 "463000000"
 "000007080"
 "800700000"
 "700000028"
 "050260000")


("grid"
 "020000006"
 "000041000"
 "007800001"
 "000000700"
 "003700000"
 "600412000"
 "010074005"
 "008050070"
 "000003900")


("grid"
 "100000308"
 "060400000"
 "000000000"
 "203010000"
 "000000075"
 "800000000"
 "070500060"
 "000080200"
 "040000000")


("grid"
 "200001090"
 "010030700"
 "900800020"
 "000000850"
 "060400000"
 "000070003"
 "020300060"
 "000500000"
 "109000205")


("grid"
 "007008000"
 "006020300"
 "030000009"
 "010050060"
 "000010000"
 "070900002"
 "000000004"
 "083004000"
 "260000510")


("grid"
 "000360000"
 "850000000"
 "904008000"
 "000006800"
 "000000017"
 "009004500"
 "010500060"
 "400009002"
 "000003000")


("grid"
 "340600000"
 "007000000"
 "020080570"
 "000005000"
 "070010020"
 "000400000"
 "036020010"
 "000000900"
 "000007082")


("grid"
 "000000401"
 "800200000"
 "000607000"
 "000800060"
 "040000300"
 "010000000"
 "600000020"
 "050010000"
 "700030000")


("grid"
 "040050067"
 "000100040"
 "000200000"
 "100800300"
 "000000200"
 "060000000"
 "000040050"
 "300000800"
 "200000000")


("grid"
 "000000040"
 "002004001"
 "070050090"
 "003007000"
 "040060000"
 "600100800"
 "020000100"
 "850900060"
 "000080003")


("grid"
 "800700004"
 "050000600"
 "000000000"
 "030970008"
 "000043005"
 "000020900"
 "006000000"
 "200060007"
 "071008302")


("grid"
 "080004050"
 "000700300"
 "000000000"
 "010085000"
 "600000200"
 "000040000"
 "302600000"
 "000000041"
 "700000000")


("grid"
 "000070080"
 "006000500"
 "020003061"
 "010007002"
 "008005340"
 "200900000"
 "002000000"
 "580006030"
 "400010000")


("grid"
 "000000801"
 "600200000"
 "000705000"
 "000600020"
 "010000300"
 "080000000"
 "200000070"
 "040080000"
 "500030000")


("grid"
 "020000000"
 "000600003"
 "074080000"
 "000003002"
 "080040010"
 "600500000"
 "000010780"
 "500009000"
 "000000040")


("grid"
 "052006800"
 "000007020"
 "000000600"
 "004800900"
 "200410000"
 "001000008"
 "006100380"
 "000090006"
 "300600109")


("grid"
 "000010780"
 "500009000"
 "000000040"
 "020000000"
 "000600003"
 "074080000"
 "000003002"
 "080040010"
 "600500000")


("grid"
 "100000003"
 "060300700"
 "070005001"
 "210700090"
 "007000000"
 "008010020"
 "000806400"
 "009020060"
 "000400000")


("grid"
 "400070100"
 "001904605"
 "000001000"
 "000700002"
 "002030000"
 "847006000"
 "014000806"
 "020000300"
 "600090000")


("grid"
 "000000801"
 "700200000"
 "000506000"
 "000700050"
 "010000300"
 "080000000"
 "500000020"
 "030080000"
 "600040000")


("grid"
 "963000000"
 "100008000"
 "000205000"
 "040800000"
 "010000700"
 "000030025"
 "700000030"
 "009020407"
 "000000900")


("grid"
 "150300000"
 "070040200"
 "004072000"
 "008000000"
 "000900108"
 "010080790"
 "000003800"
 "000000000"
 "600007423")


("grid"
 "000000000"
 "057240009"
 "800009470"
 "009003000"
 "500900120"
 "003010900"
 "060000250"
 "000560000"
 "070000006")


("grid"
 "000075000"
 "010020000"
 "040003000"
 "500000302"
 "000800010"
 "000000600"
 "000100480"
 "200000000"
 "700000000")


("grid"
 "600000703"
 "040800000"
 "000000000"
 "000504080"
 "700200000"
 "103000000"
 "020000050"
 "000070900"
 "000010000")


("grid"
 "000060004"
 "006030000"
 "100400507"
 "700000805"
 "000800000"
 "608000090"
 "002090000"
 "400003200"
 "009700100")


("grid"
 "032000005"
 "800300000"
 "904280001"
 "000400039"
 "000600050"
 "000010000"
 "020006708"
 "000004000"
 "095000060")


("grid"
 "000503000"
 "000060700"
 "508000016"
 "360020000"
 "000401000"
 "000030005"
 "670000208"
 "004070000"
 "000200500")


("grid"
 "050307040"
 "100000000"
 "030000000"
 "508030610"
 "000800509"
 "060010000"
 "000040006"
 "000692700"
 "002000900")


("grid"
 "005008001"
 "800000090"
 "000000780"
 "000400000"
 "640000900"
 "000053002"
 "060000000"
 "001380050"
 "000907140")


("grid"
 "000000000"
 "072060100"
 "005100082"
 "080001300"
 "400000000"
 "037090010"
 "000023800"
 "504009000"
 "000000790")


("grid"
 "000658000"
 "004000000"
 "120000000"
 "000009607"
 "000300500"
 "002080003"
 "001900800"
 "306000004"
 "000047300")


("grid"
 "020300000"
 "006008090"
 "830500000"
 "000200080"
 "709005000"
 "000006004"
 "000000010"
 "001000402"
 "200700809")


("grid"
 "050090000"
 "100000600"
 "000308000"
 "008040009"
 "514000000"
 "030000200"
 "000000004"
 "080006007"
 "700150060")


("grid"
 "000002000"
 "000070001"
 "700300090"
 "800700000"
 "020890600"
 "013006000"
 "090050824"
 "000008910"
 "000000000")


("grid"
 "300080000"
 "000700005"
 "100000000"
 "000000360"
 "002004000"
 "070000000"
 "000060130"
 "045200000"
 "000000800")