Pips : October 21, 2026

1. R1: empty · r1c1
2. R2: sum 10 · r1c2, r2c2
3. R3: sum 10 · r1c5, r2c5
4. R4: greater 4 · r1c6
5. R5: sum 5 · r2c3, r2c4
6. R6: empty · r3c3
7. R7: less 1 · r3c4

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

1. R1: greater 4 · r1c2
2. R2: unequal · r1c3, r2c3, r2c4
3. R3: equals · r1c4, r1c5
4. R4: greater 7 · r2c1, r3c1
5. R5: empty · r2c2
6. R6: greater 5 · r3c2, r3c3
7. R7: sum 6 · r3c4
8. R8: sum 8 · r4c3, 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. 2–6: row 3, column 3 → row 3, column 4
2. 1–1: row 1, column 4 → row 1, column 5
3. 3–4: row 3, column 1 → row 3, column 2
4. 1–5: row 2, column 2 → row 2, column 1
5. 4–4: row 4, column 3 → row 4, column 4
6. 1–0: row 2, column 4 → row 2, column 3
7. 2–5: row 1, column 3 → row 1, column 2

1. R1: less 3 · r1c1
2. R2: greater 3 · r1c4
3. R3: equals · r1c6, r1c7, r2c6
4. R4: sum 5 · r1c8
5. R5: greater 1 · r1c9
6. R6: sum 2 · r2c1
7. R7: less 3 · r2c2, r3c2
8. R8: sum 1 · r2c4
9. R9: sum 5 · r2c9
10. R10: equals · r3c1, r4c1
11. R11: empty · r3c3
12. R12: greater 0 · r3c4
13. R13: sum 5 · r3c6
14. R14: sum 3 · r3c9
15. R15: sum 9 · r4c3, r4c4
16. R16: sum 7 · r4c6, r4c7, r5c6
17. R17: sum 3 · r4c8
18. R18: unequal · r4c9, r5c9
19. R19: sum 3 · r5c1, r6c1
20. R20: sum 0 · r5c4, r6c4
21. R21: sum 3 · r6c6
22. R22: sum 5 · r6c9

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