Pips : October 27, 2026

1. R1: less 2 · r1c2
2. R2: empty · r1c4
3. R3: empty · r2c1
4. R4: equals · r2c2, r2c3
5. R5: equals · r2c4, r2c5
6. R6: sum 2 · r3c1
7. R7: greater 2 · r3c3
8. R8: sum 2 · r3c5

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

1. R1: less 4 · r1c2, r2c2, r2c3
2. R2: greater 7 · r2c1, r3c1
3. R3: less 1 · r2c4
4. R4: empty · r3c2
5. R5: empty · r3c3
6. R6: less 3 · r3c4
7. R7: sum 4 · r4c2
8. R8: empty · r4c3
9. R9: sum 7 · r4c4, r5c4
10. R10: greater 2 · r5c3

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

1. R1: sum 6 · r1c3
2. R2: sum 15 · r4c3, r5c3, r6c3, r7c3
3. R3: greater 3 · r3c3
4. R4: equals · r6c4, r6c5, r7c4
5. R5: sum 7 · r6c6, r6c7
6. R6: unequal · r6c8, r7c8, r8c8
7. R7: sum 4 · r7c5, r7c6, r8c6
8. R8: greater 4 · r8c3
9. R9: less 4 · r9c3
10. R10: less 2 · r9c6, r10c6
11. R11: sum 5 · r10c3
12. R12: equals · r2c1, r2c2, r2c3, 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. 5–3: row 10, column 3 → row 9, column 3
2. 1–2: row 7, column 8 → row 8, column 8
3. 0–3: row 6, column 8 → row 6, column 7
4. 2–6: row 4, column 3 → row 5, column 3
5. 5–5: row 7, column 3 → row 8, column 3
6. 4–4: row 6, column 5 → row 6, column 6
7. 2–4: row 6, column 3 → row 6, column 4
8. 4–0: row 7, column 4 → row 7, column 5
9. 1–3: row 7, column 6 → row 8, column 6
10. 0–1: row 9, column 6 → row 10, column 6
11. 1–1: row 2, column 1 → row 2, column 2
12. 1–4: row 3, column 2 → row 3, column 3
13. 6–1: row 1, column 3 → row 2, column 3