V0.325 · NUMBER CROSSWORD · LARGE-GRID LOCAL WORKSPACE

Kakuro

Solve exact cross-sums with notes, live run combinations, Daily archive and local snapshots. The board stays first; deeper proof, combination and evidence tools are available only when you open Advanced.

Time0:00

Daily Kakuro Unlimited Practice

Easy 6×6 · guided sums Standard 7×7 · broader sums Hard 7×7 · denser grid Expert 8×8 · larger cross-sums Large 11×11 · 64 white cells

Original banks remain intact. Expert keeps the V0.184 8×8 pool; Large adds eight 11×11 exact boards assembled from independently uniqueness-proved cross-sum blocks.

Board—Source—Runs—Filled—Hints0Clean PB—

EXPLAINABLE COACH · SOLUTION-INDEPENDENT

What can the constraints prove now?

Candidate counts come from every viable distinct-digit permutation in the selected cell’s Across and Down runs. “Explain next step” can reveal a forced deduction and therefore marks the session Assisted; the passive candidate map and calculator are study aids.

Empty—

Forced now—

Avg candidates—

Contradictions—

Coach readySelect a cell or enter a value. The proof panel will explain a forced remainder, a crossing-single, a fixed run position, or the tightest run to study next.

IntegrityClean

Last moveNo move yet

Daily 7d0/7

Daily 30d0/30

Enter a digit to receive a constraint-only move review.

Select a white cell and enter 1–9. Every run must match its sum with no repeated digit.

Keyboard: arrows move between white cells · 1–9 enter · N notes · Backspace/Delete erase · ⌘/Ctrl+Z undo · Shift+⌘/Ctrl+Z redo.

V0.184 EXPLAINABLE PROOFLearn why a move is forced

The coach enumerates only arrangements still legal under your current entries and explains run remainders, crossing intersections and fixed positions. It never consults the stored solution to construct a proof.

SUM + NO REPEATSEach clue controls one uninterrupted white run

A clue to the left controls the Across run; a clue above controls the Down run. Digits may repeat elsewhere on the board, but never inside the same run.

COMBINATION REASONINGUse remaining totals before guessing

The selected-runs panel shows legal digit sets consistent with what you have entered. Auto Notes intersects the Across and Down constraints for each empty cell without revealing the final answer.

LOCAL FIRSTDaily + autosave + clean bests

Progress stays in this browser. Daily Kakuro is separate from Today’s 6, and a clean personal best requires no Hint and no checked mistake.