Added easy 50 test

test/sudoku-easy-50.txt

@@ -0,0 +1,499 @@
+003020600
+900305001
+001806400
+008102900
+700000008
+006708200
+002609500
+800203009
+005010300
+========
+200080300
+060070084
+030500209
+000105408
+000000000
+402706000
+301007040
+720040060
+004010003
+========
+000000907
+000420180
+000705026
+100904000
+050000040
+000507009
+920108000
+034059000
+507000000
+========
+030050040
+008010500
+460000012
+070502080
+000603000
+040109030
+250000098
+001020600
+080060020
+========
+020810740
+700003100
+090002805
+009040087
+400208003
+160030200
+302700060
+005600008
+076051090
+========
+100920000
+524010000
+000000070
+050008102
+000000000
+402700090
+060000000
+000030945
+000071006
+========
+043080250
+600000000
+000001094
+900004070
+000608000
+010200003
+820500000
+000000005
+034090710
+========
+480006902
+002008001
+900370060
+840010200
+003704100
+001060049
+020085007
+700900600
+609200018
+========
+000900002
+050123400
+030000160
+908000000
+070000090
+000000205
+091000050
+007439020
+400007000
+========
+001900003
+900700160
+030005007
+050000009
+004302600
+200000070
+600100030
+042007006
+500006800
+========
+000125400
+008400000
+420800000
+030000095
+060902010
+510000060
+000003049
+000007200
+001298000
+========
+062340750
+100005600
+570000040
+000094800
+400000006
+005830000
+030000091
+006400007
+059083260
+========
+300000000
+005009000
+200504000
+020000700
+160000058
+704310600
+000890100
+000067080
+000005437
+========
+630000000
+000500008
+005674000
+000020000
+003401020
+000000345
+000007004
+080300902
+947100080
+========
+000020040
+008035000
+000070602
+031046970
+200000000
+000501203
+049000730
+000000010
+800004000
+========
+361025900
+080960010
+400000057
+008000471
+000603000
+259000800
+740000005
+020018060
+005470329
+========
+050807020
+600010090
+702540006
+070020301
+504000908
+103080070
+900076205
+060090003
+080103040
+========
+080005000
+000003457
+000070809
+060400903
+007010500
+408007020
+901020000
+842300000
+000100080
+========
+003502900
+000040000
+106000305
+900251008
+070408030
+800763001
+308000104
+000020000
+005104800
+========
+000000000
+009805100
+051907420
+290401065
+000000000
+140508093
+026709580
+005103600
+000000000
+========
+020030090
+000907000
+900208005
+004806500
+607000208
+003102900
+800605007
+000309000
+030020050
+========
+005000006
+070009020
+000500107
+804150000
+000803000
+000092805
+907006000
+030400010
+200000600
+========
+040000050
+001943600
+009000300
+600050002
+103000506
+800020007
+005000200
+002436700
+030000040
+========
+004000000
+000030002
+390700080
+400009001
+209801307
+600200008
+010008053
+900040000
+000000800
+========
+360020089
+000361000
+000000000
+803000602
+400603007
+607000108
+000000000
+000418000
+970030014
+========
+500400060
+009000800
+640020000
+000001008
+208000501
+700500000
+000090084
+003000600
+060003002
+========
+007256400
+400000005
+010030060
+000508000
+008060200
+000107000
+030070090
+200000004
+006312700
+========
+000000000
+079050180
+800000007
+007306800
+450708096
+003502700
+700000005
+016030420
+000000000
+========
+030000080
+009000500
+007509200
+700105008
+020090030
+900402001
+004207100
+002000800
+070000090
+========
+200170603
+050000100
+000006079
+000040700
+000801000
+009050000
+310400000
+005000060
+906037002
+========
+000000080
+800701040
+040020030
+374000900
+000030000
+005000321
+010060050
+050802006
+080000000
+========
+000000085
+000210009
+960080100
+500800016
+000000000
+890006007
+009070052
+300054000
+480000000
+========
+608070502
+050608070
+002000300
+500090006
+040302050
+800050003
+005000200
+010704090
+409060701
+========
+050010040
+107000602
+000905000
+208030501
+040070020
+901080406
+000401000
+304000709
+020060010
+========
+053000790
+009753400
+100000002
+090080010
+000907000
+080030070
+500000003
+007641200
+061000940
+========
+006080300
+049070250
+000405000
+600317004
+007000800
+100826009
+000702000
+075040190
+003090600
+========
+005080700
+700204005
+320000084
+060105040
+008000500
+070803010
+450000091
+600508007
+003010600
+========
+000900800
+128006400
+070800060
+800430007
+500000009
+600079008
+090004010
+003600284
+001007000
+========
+000080000
+270000054
+095000810
+009806400
+020403060
+006905100
+017000620
+460000038
+000090000
+========
+000602000
+400050001
+085010620
+038206710
+000000000
+019407350
+026040530
+900020007
+000809000
+========
+000900002
+050123400
+030000160
+908000000
+070000090
+000000205
+091000050
+007439020
+400007000
+========
+380000000
+000400785
+009020300
+060090000
+800302009
+000040070
+001070500
+495006000
+000000092
+========
+000158000
+002060800
+030000040
+027030510
+000000000
+046080790
+050000080
+004070100
+000325000
+========
+010500200
+900001000
+002008030
+500030007
+008000500
+600080004
+040100700
+000700006
+003004050
+========
+080000040
+000469000
+400000007
+005904600
+070608030
+008502100
+900000005
+000781000
+060000010
+========
+904200007
+010000000
+000706500
+000800090
+020904060
+040002000
+001607000
+000000030
+300005702
+========
+000700800
+006000031
+040002000
+024070000
+010030080
+000060290
+000800070
+860000500
+002006000
+========
+001007090
+590080001
+030000080
+000005800
+050060020
+004100000
+080000030
+100020079
+020700400
+========
+000003017
+015009008
+060000000
+100007000
+009000200
+000500004
+000000020
+500600340
+340200000
+========
+300200000
+000107000
+706030500
+070009080
+900020004
+010800050
+009040301
+000702000
+000008006