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Lizely

Addition Maze

Choose a route through a compact number maze whose visited cells add to exactly 19.

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How to use

  1. 1.Start on 2 and move through connected numbered cells with the arrow keys.
  2. 2.Watch the running sum; visited cells cannot be used again and walls do not move you.
  3. 3.Take Right, Down, Right, Down to reach the goal with exactly 19 and score 800.

About Addition Maze

Addition Maze is a fixed three by three path puzzle that combines simple navigation with a running sum. You begin on the top-left number 2. Move only through connected numbered cells, never revisit a cell, and reach the bottom-right goal with a path total of exactly 19.

This is a disclosed Lizely product fixture rather than an external standardized maze or factual dataset. The cell values, five passages, target, score, winning route, and deliberate trap are all visible on this page and asserted independently in the pure logic test. No random generator or hidden daily board changes the answer.

Use the arrow keys to move. A key press succeeds only when the neighboring square shares a declared passage, contains a number, and has not already been visited. Walls and closed edges leave the state unchanged and do not reduce the score. Mouse-only navigation is intentionally unnecessary because this game is designed for a quick keyboard break.

The winning route is Right, Down, Right, Down. It visits 2, 4, 6, 2, and 5. The running arithmetic is 2 + 4 = 6, then +6 = 12, +2 = 14, and +5 = 19. Four accepted moves reach the goal and score 800 from a starting value of 1,000.

Moving Down from the start is a real alternate choice rather than a decorative wall. It visits 8, brings the total to 10, and enters a cul-de-sac whose only neighbor is the already visited start. The browser detects that no unvisited connected cell remains and reports a deadlock immediately. Restart is then the honest recovery path.

The validator also rejects a route whose sum rises above 19 and reaching the goal with any other total. Producing 19 away from the goal is not completion: both the correct destination and exact sum are required. Invalid off-board arrows, closed passages, walls, and attempted revisits are harmless no-ops.

The independent test drives the complete four-key solution, asserts the disclosed path array, final sum, move count, and 800 score, then drives the first-move trap and proves its deadlock cannot continue. A separate boundary assertion proves that moving left from the start does not change the cursor.

The interface is a semantic CSS grid rather than canvas art. Every cell announces its number or wall state, visit state, and current position. Path, surface, border, warning, and focus colors use the site's CSS variables. There are no downloaded assets, timers, audio cues, accounts, network calls, hardware requirements, or pointer-only gestures. The compact layout also remains readable without requiring zoom, drag gestures, or precision pointer targeting.

Restart returns to the initial 2, clears the route, restores 1,000 points, and removes completion or deadlock. A completed best score remains only in this browser's localStorage. Double-press Escape for the shared simulated spreadsheet boss screen, then repeat the gesture to resume the unchanged maze. For more arithmetic breaks, try Math Maze, Math Crossword, Number Sequence Quiz, or Number Match 10.

Methodology & sources

The state stores cursor, visited path, running sum, moves, score, completion, and deadlock. An arrow move must follow one of five declared undirected edges to a nonzero unvisited cell. Completion is cell 8 with sum 19. Deadlock means sum above target, wrong total at goal, or no unvisited neighbor. Score is max(0, 1000 minus 50 times accepted moves).

Frequently asked questions

Why does moving Down first cause a deadlock?
It enters the 8 cul-de-sac. Its only passage returns to the visited start, so no legal unvisited move remains.
Do blocked arrow presses cost points?
No. Only a successful move onto a new connected number counts and subtracts 50 points.
Can I win by reaching 19 before the goal?
No. Completion requires both the bottom-right goal position and an exact running sum of 19.
Is the maze random?
No. The fixed disclosed board makes the full winning route and wrong-route deadlock reproducible.

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