CageDokuKiller Sudoku Cage Combinations Cheat Sheet (Free PDF)
By Andrew Boyko, developer of CageDoku · Updated
All digit combinations for 2- to 5-cell cages on one printable page. Outlined entries are unique: only one set of digits is possible.
2-cell cages
3 12
4 13
5 1423
6 1524
7 162534
8 172635
9 18273645
10 19283746
11 29384756
12 394857
13 495867
14 5968
15 6978
16 79
17 89
3-cell cages
6 123
7 124
8 125134
9 126135234
10 127136145235
11 128137146236245
12 129138147156237246345
13 139148157238247256346
14 149158167239248257347356
15 159168249258267348357456
16 169178259268349358367457
17 179269278359368458467
18 189279369378459468567
19 289379469478568
20 389479569578
21 489579678
22 589679
23 689
24 789
4-cell cages
10 1234
11 1235
12 12361245
13 123712461345
14 12381247125613462345
15 123912481257134713562346
16 12491258126713481357145623472356
17 125912681349135813671457234823572456
18 12691278135913681458146723492358236724573456
19 12791369137814591468156723592368245824673457
20 128913791469147815682369237824592468256734583467
21 13891479156915782379246924782568345934683567
22 14891579167823892479256925783469347835684567
23 158916792489257926783479356935784568
24 16892589267934893579367845694578
25 178926893589367945794678
26 27893689458946795678
27 378946895679
28 47895689
29 5789
30 6789
5-cell cages
15 12345
16 12346
17 1234712356
18 123481235712456
19 1234912358123671245713456
20 123591236812458124671345723456
21 1236912378124591246812567134581346723457
22 123791246912478125681345913468135672345823467
23 1238912479125691257813469134781356814567234592346823567
24 1248912579126781347913569135781456823469234782356824567
25 125891267913489135791367814569145782347923569235782456834567
26 1268913589136791457914678234892357923678245692457834568
27 1278913689145891467915678235892367924579246783456934578
28 137891468915679236892458924679256783457934678
29 1478915689237892468925679345893467935678
30 157892478925689346893567945678
31 1678925789347893568945679
32 267893578945689
33 3678945789
34 46789
35 56789
Three rules that save time
- 45 rule: every row, column and box adds up to 45 (21 in 6×6).
- Complement rule: a cage with n cells and sum s leaves out digits that add up to 45 − s, which is easier for big cages.
- Unique pairs: 3, 4, 16 and 17 for two cells; 6, 7, 23 and 24 for three cells.
Frequently asked questions
How do I save this cheat sheet as a PDF?
Press the button below (or Ctrl/Cmd+P) and choose “Save as PDF” as the printer. The page is formatted for A4 and Letter.
What does a highlighted combination mean?
The outlined combinations are the only possible set of digits for that cage size and sum.