Step 1:
L-R1(06): R1C1<>{789}
--> T-C1(07): max R12C1 = 7
T-C2(12): max R12C2 = 12
L-R3(15): max R3C12 = 15
--> N1: min R123C3 = 45-7-12-15 = 11
--> T-C3(10): R12C3 = 10(2) = {19/28/37/46}
--> N1: min R3C123 = 45-7-12-10 = 16
--> L-R3(15),NC: R3C12 = 15(2) = {69} (R3,N1)
--> T-C1(07),NC: R12C1 = 7(2) = {25} (C1,N1)
--> T-C3(10): R12C3 = 10(2) = {37} (C3,N1)
--> T-C2(12): R12C2 = 12(2) = {48} (C2,N1)
--> R3C3 = [1]
--> L-R1(06): R1C12 = 6(2) = [24]
--> NC: N1 = [247583961]
Step 2:
T-C8(06),NC: R1C8<>{1389}, must be [5/6]
--> NC: R1C79+R2C8<>{56}
R-R1(08),NC: R1C9<>{19}, must be [3/8]
--> T-C9(12): R2C9<>{26}
R-R2(10),NC: R2C9<>{47}, must be [1/9]
N3: [6] locked in R1C8+R2C7
--> NC: R2C8<>[7]
--> R-R2(10),NC: [9] locked in R2C89 = 10(2) = {19} (R2,N3)
--> R1C79={38} (R1,N3)
--> T-C9(12): R12C9 = 12(2) = [39]
--> R-R1(08) = 8(2) = [53]
--> R1C7=[8], R2C8=[1]
--> Hidden single N3: R2C7=[6]
NC: R2C4=[7]
--> R2C56={24} (N2)
--> NC: R3C56<>[3]
--> Hidden single N2: R3C4=[3]
Step 3:
B-C9(07),NC: R8C9<>{78}
--> R-R8(08): max R8C89 = 8
R-R7(14): max R7C89=14
R-R9(11): max R9C89=11
--> N9: min R789C7 = 45-8-14-11 = 12
--> B-C7(11): R89C7 = 11(2) = {29/47}
--> N9: min R7C789 = 45-11-8-11 = 15
--> R-R7(14): R7C89 = 14(2) = [68/86/95]
--> B-C8(12): R8C8<>{67}
--> R-R8(08),NC: R8C89 = 8(2) = [26/35]
--> NC: R7C89 = 14(2) = [68]
--> R8C89 = 8(2) = [35]
--> B-C8(12): R89C8 = 12(2) = [39]
--> R-R9(11): R9C89 = 11(2) =[92]
--> NC: R89C7 = 11(2) = [74]
--> R37C7=[21]
Step 4:
B-C2(04): R89C2 = 4(2) = [13]
--> L-R9(09): R9C12 = 9(2) = [63]
--> B-C1(14): R89C1 = 14(2) = [86]
--> NC: N7=[472819635]
--> NC: R9C456=[817]
--> NC: R8C6<>[6], must be [2/4]
--> NC: R7C6<>[3]
--> Hidden single N8: R7C5=[3]
--> NC: R8C5=[6]
--> NC: R1C456=[196]
Step 5:
NC: R6C89<>[7]
N6: [8] locked in R456C8
--> NC: R5C8<>[7]
N6: [6] locked in R456C9
--> NC: R5C9<>[7]
--> N6: [7] locked in R4C89 (R4)
--> NC: R4C89<>{68}
--> NC: R4C2=[9]
--> NC: R4C347=[465]
--> NC: R5C4<>[5]
--> R4: [8] locked in R4C56 (N5)
Step 6:
NC: R6C1<>[3], R6C5<>{24}
NC: R6C12 can't be [12], must include {57}
--> Complex naked pair {57} in R6C125 (R6)
--> Hidden single C4: R7C4=[5]
--> NC: N8 = [539264817]
--> N2 = [196742385]
--> R4 = [394628571]
--> R3C89=[47]
--> NC: R5 = [158473926]
--> R6 = [726951384]
247196853
583742619
961385247
394628571
158473926
726951384
472539168
819264735
635817492
)
