Math & Number Games
Mental arithmetic, arithmetic-cage logic and target-number puzzles with calibrated difficulty, verified solutions and guided routes.
Choose a game
Practice quick arithmetic, solve a unique arithmetic-cage grid, or slow down for target-number planning and 2048 strategy.
Calcudoku
Unique-solution 4×4, 5×5 and 6×6 Latin-square puzzles with sum, product, difference and quotient cages, notes, autosave and cage possibilities.
Open Calcudoku →V0.78 · NUMBER CROSSWORDKakuro
Unique-solution crossing sums with no repeated digit in a run, Notes, Auto Notes, live combinations, Daily play and clean local bests.
Open Kakuro →V0.60 · SLIDE + MERGE2048
Merge powers of two on 3×3, 4×4 or 5×5 boards with deterministic spawns, five-step Undo, autosave and clean local bests.
Open 2048 →PLAY NOWMental Math
Ten-question rounds, timed Sprints, a transparent Adaptive Ladder and Weak Facts review at your chosen level.
Open Practice →PLAY NOWNumber Target · Classic 4
Combine four cards exactly once to reach a verified target.
Open Classic →V0.52 · MAKE 24Make 24
Use four 1–9 cards exactly once to make 24 from a 404-hand exhaustively verified catalog.
Open Make 24 →V0.38 · TARGET 6Six-Number Target
Race six cards toward a verified 100–999 target with selectable large numbers and timer.
Open Target 6 →Focused challenges
Evergreen entry points connect a specific search intent to the real Practice mode instead of duplicating the game.
Kakuro Puzzle
Cross-number sums with a deterministic, independently uniqueness-verified puzzle bank and real candidate logic.
V0.78 · DAILY KAKURODaily Kakuro
One date-stable specialist puzzle with local history and a streak kept separate from Today’s 6.
V0.60 · 20482048 Game Online
Classic and alternate board sizes with real seeded Practice.
V0.60 · DAILYDaily 2048
One date-stable Classic 4×4 specialist puzzle.
EVERGREEN CHALLENGEMental Math Practice
Ten-question mental math practice with addition, subtraction, multiplication, division, squares and percentages.
V0.51 · DECIMALSDecimal Mental Math
Practice one-decimal-place arithmetic in typed-answer rounds or the transparent Adaptive Ladder.
V0.51 · ORDEROrder of Operations Practice
Practice precedence and parentheses with real generated expressions in rounds or Adaptive Ladder.
V0.29 SPEEDMental Math Speed Test
Run a 60-second mixed-arithmetic Sprint with accuracy, correct-per-minute pace and personal best tracking.
V0.29 SPEEDMultiplication Speed Test
Race a multiplication timer using mixed tables or a selected 2–12 table.
EVERGREEN CHALLENGEEasy Mental Math
Easy mental math practice with friendly addition, subtraction and multiplication questions.
EVERGREEN CHALLENGEHard Mental Math
Hard mental math practice with larger multiplication, division, squares and percentage questions.
V0.132 · MAKE 24 SPECIALISTMake 24 · Exact Arithmetic
Use four numbers exactly once to reach 24 with reduced fractions, solver-calibrated difficulty, verified state hints and separate Daily progress.
EVERGREEN CHALLENGETarget Number Puzzle
Combine four number cards with arithmetic operations to reach an exact target using every card once.
V0.38 · TARGET 6Countdown Numbers Game
Use six number cards to reach a verified 100–999 target with 0–4 large numbers and 30/60-second or Zen play.
Daily for habit
Today's 6 keeps the main routine short: one rotating game from each pillar and a single 6,000-point daily score.
Practice for depth
Practice can be repeated without changing the Daily Score, so search visitors can immediately play the exact skill they came for.
Related discovery
Every hub links into neighboring challenges so a visitor who finishes one game has a natural next task instead of a dead end.
Focused arithmetic practice
V0.23 adds real underlying Practice modes before adding search-facing entry pages.
Decimal Mental Math
Practice one-decimal-place arithmetic in typed-answer rounds or the transparent Adaptive Ladder.
V0.51 · ORDEROrder of Operations Practice
Practice precedence and parentheses with real generated expressions in rounds or Adaptive Ladder.
V0.23 FOCUSED PRACTICEAddition Practice
Practice fast addition with ten focused mental-arithmetic questions and adjustable difficulty.
V0.23 FOCUSED PRACTICESubtraction Practice
Practice subtraction online with ten focused non-negative mental-math questions.
V0.23 FOCUSED PRACTICEMultiplication Practice
Practice multiplication facts and larger mental products in focused ten-question rounds.
V0.23 FOCUSED PRACTICEDivision Practice
Practice exact mental division with ten questions designed to produce whole-number answers.
V0.23 FOCUSED PRACTICEPercentage Practice
Practice common percentages such as 10%, 20%, 25%, 50% and 75% with mental-math questions.
V0.23 FOCUSED PRACTICESquares Quiz
Practice square numbers in a focused ten-question mental-math challenge.
V0.23 FOCUSED PRACTICE2 Times Table Practice
Practice the 2 times table online with ten focused multiplication questions.
V0.23 FOCUSED PRACTICE3 Times Table Practice
Practice the 3 times table online with ten focused multiplication questions.
V0.23 FOCUSED PRACTICE4 Times Table Practice
Practice the 4 times table online with ten focused multiplication questions.
V0.23 FOCUSED PRACTICE5 Times Table Practice
Practice the 5 times table online with ten focused multiplication questions.
V0.23 FOCUSED PRACTICE6 Times Table Practice
Practice the 6 times table online with ten focused multiplication questions.
V0.23 FOCUSED PRACTICE7 Times Table Practice
Practice the 7 times table online with ten focused multiplication questions.
V0.23 FOCUSED PRACTICE8 Times Table Practice
Practice the 8 times table online with ten focused multiplication questions.
V0.23 FOCUSED PRACTICE9 Times Table Practice
Practice the 9 times table online with ten focused multiplication questions.
V0.23 FOCUSED PRACTICE10 Times Table Practice
Practice the 10 times table online with ten focused multiplication questions.
V0.23 FOCUSED PRACTICE11 Times Table Practice
Practice the 11 times table online with ten focused multiplication questions.
V0.23 FOCUSED PRACTICE12 Times Table Practice
Practice the 12 times table online with ten focused multiplication questions.
Multiplication Fact Mastery
Build 1×–12× recall through Study, Direct Recall, Missing Factor, Fluency 60 and a mixed Mastery Check, with real Weak Facts feeding the next recommendation.
Multiplication Fact Mastery guide → Open Fact Mastery →