... by: Valery

File "#560".
Total solving time is: 5 sec.
The number of cycles: 9.
Trial and error.
Number of expected cells 1: B8=4.

005 000 090..........145 672 893
600 000 700..........692 583 741
030 001 002..........837 941 652

009 800 500..........319 824 567
200 006 004..........278 356 914
000 010 030..........564 719 238

400 200 006..........451 298 376
000 007 100..........923 467 185
080 030 000..........786 135 429