THE BIG BOOK OF GAMES · NEW CHAPTER
The Great
Solo Challenge.
Puzzles for persistent thinkers.
40 original puzzles. 20 Expert challenges and 20 Extreme challenges. Four disciplines to explore at your own pace, with just a pencil.
The downloadable HTML workbook includes all 40 puzzles and a separate solutions section. You can open it offline and print it. All game materials are provided.
Take your time.
Solutions are on separate pages. Each challenge includes the rules you need. Our rating reflects the techniques and exploration a puzzle calls for. How long it takes depends on your approach.
Read how we verified the puzzles →Choose a discipline.
40 challenges
Sudoku and variants
SOLO-001 · Classic Sudoku
The Ninth Lock
EXPERTSOLO-002 · Classic SudokuThe Hidden Crossroads
EXTREMESOLO-003 · Classic SudokuThe Inverted Mesh
EXPERTSOLO-004 · Classic SudokuBranches of Silence
EXTREMESOLO-005 · Diagonal SudokuThe Two Crossings
EXPERTSOLO-006 · Diagonal SudokuThe Stubborn Mirror
EXTREMESOLO-007 · Irregular SudokuThe Living Border
EXPERTSOLO-008 · Irregular SudokuThe Nine Territories
EXTREMESOLO-009 · Killer SudokuCaptive Sums
EXPERTSOLO-010 · Killer SudokuUnyielding Totals
EXTREMENumbers and deduction
SOLO-011 · Advanced Mastermind
The Eight Inks
EXPERTSOLO-012 · Advanced MastermindThe Silent Lock
EXPERTSOLO-013 · Advanced MastermindSix Slots Without an Echo
EXTREMESOLO-014 · Advanced MastermindThe Chamber of Duplicates
EXTREMESOLO-015 · CryptarithmThe Twin Carries
EXPERTSOLO-016 · CryptarithmThe Second Addition
EXPERTSOLO-017 · CryptarithmTen Letters, Two Locks
EXTREMESOLO-018 · FutoshikiThe Seven Staircases
EXPERTSOLO-019 · FutoshikiThe Eight Passages
EXTREMESOLO-020 · FutoshikiColumns Under Tension
EXTREMESpatial puzzles and paths
SOLO-021 · Nonogram
Crossing Intervals
EXPERTSOLO-022 · NonogramThe Suspended Weave
EXPERTSOLO-023 · NonogramThe Fragmented Grid
EXTREMESOLO-024 · NonogramThe Hidden Border
EXTREMESOLO-025 · Hamiltonian pathThe Silent Checkpoints
EXPERTSOLO-026 · Hamiltonian pathThe One-Way Crossing
EXPERTSOLO-027 · Hamiltonian pathThe Maze Without Walls
EXTREMESOLO-028 · Pentomino tilingThe Eight Shapes
EXPERTSOLO-029 · Pentomino tilingThe Locked Mosaic
EXTREMESOLO-030 · Pentomino tilingThe Stubborn Rectangle
EXTREMESolo strategy
SOLO-031 · Othello / Reversi
The Final Tempo
EXPERTSOLO-032 · Othello / ReversiThe Deceptive Corner
EXPERTSOLO-033 · Othello / ReversiMobility in Reserve
EXPERTSOLO-034 · Othello / ReversiThe Defense Tree
EXTREMESOLO-035 · Othello / ReversiPaths to a Majority
EXTREMESOLO-036 · Othello / ReversiThe Last Word
EXTREMESOLO-037 · Nim — pair subtractionTwo Workshops
EXPERTSOLO-038 · Nim — pair subtractionThe Broken Balance
EXPERTSOLO-039 · Nim — pair subtractionThree Linked Fronts
EXTREMESOLO-040 · Nim — pair subtractionThe Great Pile Board
EXTREMECreated by Tokiniaina Hervé