Pips : November 2, 2026

1. R1: equals · r2c2, r3c2
2. R2: equals · r3c4, r3c5
3. R3: sum 1 · r1c2
4. R4: sum 1 · r1c5
5. R5: greater 4 · r3c6
6. R6: less 4 · r3c1
7. R7: empty · r2c5
8. R8: empty · r3c3

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

1. R1: less 4 · r1c3
2. R2: equals · r1c6, r2c6, r3c6
3. R3: sum 8 · r2c1, r2c2
4. R4: less 11 · r2c3, r2c4, r3c3, r3c4
5. R5: less 8 · r2c5, r3c5
6. R6: greater 3 · r3c1
7. R7: empty · r3c2

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

1. R1: sum 1 · r1c5
2. R2: empty · r1c6
3. R3: sum 3 · r1c7
4. R4: sum 16 · r2c3, r3c3, r3c4, r4c4
5. R5: sum 3 · r2c4
6. R6: sum 2 · r2c5
7. R7: sum 1 · r2c6
8. R8: greater 5 · r2c7
9. R9: less 2 · r2c8
10. R10: less 2 · r3c1
11. R11: equals · r3c2, r4c2, r4c3, r5c3
12. R12: sum 1 · r3c5
13. R13: unequal · r3c6, r4c6, r5c6
14. R14: less 3 · r3c7, r4c7
15. R15: less 1 · r4c1
16. R16: sum 2 · r4c5
17. R17: greater 4 · r5c2
18. R18: equals · r5c4, r5c5, r6c4, r7c4
19. R19: sum 7 · r8c4, r8c5

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