Pips : October 19, 2026
This fixed-date record contains the publisher’s verified solution.
Reveal answer and explanation
Answer board
Easy board
#1379
Region rules and coordinates
- R1: equals · r1c1, r1c2, r1c3
- R2: empty · r1c4
- R3: greater 1 · r2c1
- R4: sum 8 · r2c3, r2c4
- R5: sum 3 · r3c2, r3c3
- R6: greater 3 · r4c2
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.
Domino placements
Rows and columns below start at 1, from the top left.
- 5–5: row 1, column 2 → row 1, column 3
- 2–1: row 2, column 4 → row 1, column 4
- 1–5: row 3, column 2 → row 4, column 2
- 5–4: row 1, column 1 → row 2, column 1
- 2–6: row 3, column 3 → row 2, column 3
Medium board
#1383
Region rules and coordinates
- R1: greater 3 · r1c2
- R2: greater 4 · r1c3, r2c3
- R3: unequal · r2c1, r2c2, r3c2
- R4: sum 12 · r2c4, r3c4, r4c4
- R5: sum 3 · r3c1
- R6: equals · r3c3, r4c3, r5c3
- R7: less 5 · r4c1
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.
Domino placements
Rows and columns below start at 1, from the top left.
- 4–3: row 4, column 1 → row 3, column 1
- 4–2: row 1, column 2 → row 1, column 3
- 6–3: row 2, column 4 → row 2, column 3
- 0–4: row 3, column 2 → row 3, column 3
- 6–1: row 2, column 1 → row 2, column 2
- 5–1: row 3, column 4 → row 4, column 4
- 4–4: row 4, column 3 → row 5, column 3
Hard board
#1391
Region rules and coordinates
- R1: equals · r1c1, r1c2, r1c3
- R2: sum 2 · r1c4
- R3: sum 6 · r1c6, r1c7
- R4: empty · r1c8
- R5: greater 11 · r2c1, r3c1, r3c2
- R6: sum 6 · r2c6
- R7: greater 1 · r3c3
- R8: empty · r3c6
- R9: sum 2 · r3c7
- R10: sum 10 · r4c1, r5c1
- R11: less 6 · r4c6, r5c6
- R12: sum 6 · r5c7
- R13: greater 2 · r5c8
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.
Domino placements
Rows and columns below start at 1, from the top left.
- 2–6: row 3, column 3 → row 3, column 2
- 4–0: row 4, column 6 → row 5, column 6
- 4–4: row 1, column 1 → row 1, column 2
- 3–3: row 2, column 1 → row 3, column 1
- 6–1: row 2, column 6 → row 1, column 6
- 4–6: row 5, column 8 → row 5, column 7
- 2–4: row 1, column 4 → row 1, column 3
- 2–0: row 3, column 7 → row 3, column 6
- 3–5: row 1, column 8 → row 1, column 7
- 5–5: row 4, column 1 → row 5, column 1
Monday’s set is Easy #1379, Medium #1383 and Hard #1391, by Ian Livengood and Rodolfo Kurchan, edited by Ian Livengood. The hard board uses 10 dominoes across 13 regions, including 8 single-cell regions.
Read each region’s rule before placing dominoes. A single-cell sum gives an exact value; a less-than or greater-than rule gives a range, and an unmarked region adds no constraint. Use the remaining dominoes and neighboring placements to narrow the possibilities.
Correction: A single-cell region does not always determine one pip value. Its rule may give an exact sum, an inequality or no additional constraint.
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