Pips : October 28, 2026

1. R1: less 3 · r1c1, r2c1
2. R2: less 2 · r1c6, r2c6
3. R3: empty · r3c2
4. R4: empty · r3c5
5. R5: equals · r4c2, r4c3
6. R6: sum 3 · r4c4, r4c5

sum = target total; equals = same value; unequal = all different values; less = total below target; greater = total above target; empty = no constraint. D labels identify dominoes; R labels identify regions.

Rows and columns below start at 1, from the top left.

1. 0–0: row 1, column 6 → row 2, column 6
2. 1–4: row 4, column 4 → row 4, column 3
3. 6–4: row 3, column 2 → row 4, column 2
4. 2–5: row 4, column 5 → row 3, column 5
5. 1–1: row 1, column 1 → row 2, column 1

1. R1: sum 8 · r1c1, r1c2, r2c2
2. R2: equals · r1c3, r2c3, r2c4
3. R3: empty · r2c1
4. R4: empty · r3c1
5. R5: less 1 · r3c2
6. R6: sum 5 · r3c3, r4c3
7. R7: empty · r3c4
8. R8: greater 0 · r4c1
9. R9: sum 3 · r4c4

sum = target total; equals = same value; unequal = all different values; less = total below target; greater = total above target; empty = no constraint. D labels identify dominoes; R labels identify regions.

Rows and columns below start at 1, from the top left.

1. 2–3: row 3, column 4 → row 4, column 4
2. 6–0: row 4, column 1 → row 3, column 1
3. 5–5: row 2, column 3 → row 2, column 4
4. 0–4: row 3, column 2 → row 2, column 2
5. 1–4: row 3, column 3 → row 4, column 3
6. 5–3: row 1, column 3 → row 1, column 2
7. 2–1: row 2, column 1 → row 1, column 1

1. R1: sum 3 · r1c2
2. R2: sum 4 · r1c3
3. R3: sum 5 · r1c4
4. R4: sum 2 · r1c5
5. R5: sum 4 · r2c1
6. R6: sum 1 · r2c2
7. R7: sum 3 · r2c3
8. R8: sum 0 · r2c4
9. R9: sum 4 · r2c5
10. R10: sum 0 · r2c6
11. R11: sum 0 · r3c1
12. R12: sum 2 · r3c2
13. R13: empty · r3c3
14. R14: sum 5 · r3c4
15. R15: sum 4 · r3c5
16. R16: sum 2 · r3c6
17. R17: sum 5 · r4c1
18. R18: sum 3 · r4c2
19. R19: sum 0 · r4c3
20. R20: sum 1 · r4c4
21. R21: sum 3 · r4c5
22. R22: sum 3 · r4c6
23. R23: sum 1 · r5c1
24. R24: sum 2 · r5c2
25. R25: sum 2 · r5c3
26. R26: sum 3 · r5c4
27. R27: sum 5 · r5c5
28. R28: sum 0 · r5c6
29. R29: sum 5 · r6c2
30. R30: sum 1 · r6c3
31. R31: sum 1 · r6c4
32. R32: sum 4 · r6c5

sum = target total; equals = same value; unequal = all different values; less = total below target; greater = total above target; empty = no constraint. D labels identify dominoes; R labels identify regions.

Rows and columns below start at 1, from the top left.

1. 0–1: row 4, column 3 → row 4, column 4
2. 0–2: row 2, column 6 → row 3, column 6
3. 0–3: row 5, column 6 → row 4, column 6
4. 0–4: row 3, column 1 → row 2, column 1
5. 0–5: row 2, column 4 → row 3, column 4
6. 1–2: row 6, column 3 → row 5, column 3
7. 1–3: row 2, column 2 → row 1, column 2
8. 1–4: row 6, column 4 → row 6, column 5
9. 1–5: row 5, column 1 → row 4, column 1
10. 2–3: row 3, column 2 → row 4, column 2
11. 2–4: row 1, column 5 → row 2, column 5
12. 2–5: row 5, column 2 → row 6, column 2
13. 3–4: row 4, column 5 → row 3, column 5
14. 3–5: row 5, column 4 → row 5, column 5
15. 4–5: row 1, column 3 → row 1, column 4
16. 3–6: row 2, column 3 → row 3, column 3