output from SquareSwap4NoPath.cs - see https://pastebin.com/Ah4Lw8SB

Starting state [total moves left: 136, magic constant = 34]:
 8  | 6  | 7  | G
----+----+----+----
 1  | 4  | 3  | A
----+----+----+----
 9  | D  | 2  | E
----+----+----+----
 B  | C  | 5  | F

Equality check: True
Starting on working set #136, which has 1 members... [0 already in later working sets]
Starting on working set #135, which has 0 members... [24 already in later working sets]
Starting on working set #134, which has 3 members... [21 already in later working sets]
Starting on working set #133, which has 4 members... [80 already in later working sets]
Starting on working set #132, which has 3 members... [159 already in later working sets]
Starting on working set #131, which has 14 members... [198 already in later working sets]
Starting on working set #130, which has 24 members... [451 already in later working sets]
Starting on working set #129, which has 29 members... [835 already in later working sets]
Starting on working set #128, which has 59 members... [1231 already in later working sets]
Starting on working set #127, which has 78 members... [2110 already in later working sets]
Starting on working set #126, which has 149 members... [3174 already in later working sets]
Starting on working set #125, which has 158 members... [5241 already in later working sets]
Starting on working set #124, which has 354 members... [7050 already in later working sets]
Starting on working set #123, which has 453 members... [11547 already in later working sets]
Starting on working set #122, which has 687 members... [16959 already in later working sets]
Starting on working set #121, which has 947 members... [24867 already in later working sets]
Starting on working set #120, which has 1359 members... [34905 already in later working sets]
Starting on working set #119, which has 2186 members... [49562 already in later working sets]
Starting on working set #118, which has 2990 members... [71686 already in later working sets]
Starting on working set #117, which has 3514 members... [101673 already in later working sets]
Starting on working set #116, which has 5774 members... [133025 already in later working sets]
Starting on working set #115, which has 7249 members... [186298 already in later working sets]
Starting on working set #114, which has 10451 members... [249394 already in later working sets]
Starting on working set #113, which has 14104 members... [338739 already in later working sets]
Starting on working set #112, which has 17715 members... [454210 already in later working sets]
Starting on working set #111, which has 25386 members... [589254 already in later working sets]
Starting on working set #110, which has 32639 members... [779875 already in later working sets]
Starting on working set #109, which has 42649 members... [1020236 already in later working sets]
Starting on working set #108, which has 57184 members... [1319360 already in later working sets]
Starting on working set #107, which has 70292 members... [1709734 already in later working sets]
Starting on working set #106, which has 95113 members... [2152730 already in later working sets]
Starting on working set #105, which has 122300 members... [2749032 already in later working sets]
Starting on working set #104, which has 155100 members... [3493334 already in later working sets]
Starting on working set #103, which has 197574 members... [4395084 already in later working sets]
Starting on working set #102, which has 242550 members... [5510381 already in later working sets]
Starting on working set #101, which has 313673 members... [6788328 already in later working sets]
Starting on working set #100, which has 390341 members... [8414141 already in later working sets]
Starting on working set #99, which has 484832 members... [10351891 already in later working sets]
Starting on working set #98, which has 606998 members... [12665458 already in later working sets]
Starting on working set #97, which has 731967 members... [15484805 already in later working sets]
Starting on working set #96, which has 902223 members... [18704606 already in later working sets]
Starting on working set #95, which has 1109777 members... [22481582 already in later working sets]
Starting on working set #94, which has 1345383 members... [27018982 already in later working sets]
Starting on working set #93, which has 1649008 members... [32238026 already in later working sets]
Starting on working set #92, which has 1960768 members... [38458499 already in later working sets]
Starting on working set #91, which has 2328356 members... [45507158 already in later working sets]
Starting on working set #90, which has 2822199 members... [53406134 already in later working sets]
Starting on working set #89, which has 3341643 members... [62649837 already in later working sets]
Starting on working set #88, which has 3966383 members... [73122122 already in later working sets]
Starting on working set #87, which has 4690996 members... [85003271 already in later working sets]
Starting on working set #86, which has 5463025 members... [98536155 already in later working sets]
Starting on working set #85, which has 6399009 members... [113378722 already in later working sets]
Starting on working set #84, which has 7435950 members... [129990141 already in later working sets]
Starting on working set #83, which has 8697943 members... [148204537 already in later working sets]
Starting on working set #82, which has 10046470 members... [168742003 already in later working sets]
Starting on working set #81, which has 11512026 members... [191240839 already in later working sets]
Starting on working set #80, which has 13175856 members... [215606748 already in later working sets]
Starting on working set #79, which has 15003657 members... [242039963 already in later working sets]
Starting on working set #78, which has 17096231 members... [270305714 already in later working sets]
Starting on working set #77, which has 19429869 members... [300703215 already in later working sets]
Starting on working set #76, which has 21897121 members... [333578535 already in later working sets]
Starting on working set #75, which has 24619997 members... [368224658 already in later working sets]
Starting on working set #74, which has 27430981 members... [405007678 already in later working sets]
Starting on working set #73, which has 30581360 members... [442996633 already in later working sets]
Starting on working set #72, which has 34018844 members... [482541473 already in later working sets]
Starting on working set #71, which has 37638561 members... [523474262 already in later working sets]

Unhandled Exception: System.AggregateException: One or more errors occurred. ---> System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.