Puzzle collection

Logic, Number, Spatial, and Board Puzzles

Puzzle games exercise different kinds of reasoning. Minesweeper turns nearby counts into constraints, Sudoku eliminates candidates across overlapping units, and spatial games ask how one local move reshapes the entire board. A broad collection makes those differences explicit.

Deduction grids

Minesweeper uses visible numbers to constrain hidden mines, while Sudoku uses rows, columns, and boxes to constrain digits. Both reward exact notation, yet only Minesweeper can reach a generated state where probability is necessary.

Spatial transformation

The Fifteen Puzzle moves one tile through an empty space; 2048 shifts an entire row or column; Peg Solitaire removes a jumped piece. Planning improves when the player predicts the full post-move board instead of focusing only on the selected piece.

Matching and local opponents

Mahjong Solitaire combines matching with blocked-layer geometry, and Card Pairs tests spatial memory. Tic-Tac-Toe and Connect Four use deterministic local opponents, so no account or remote player receives the board state.

Curated starting points

Games in this collection

MinesweeperReveal every safe square, read the number clues, and mark hidden mines without triggering one.SudokuComplete a nine-by-nine number grid with notes, conflict checks, and three carefully generated difficulties.2048Slide and combine equal numbered tiles on a four-by-four board in the complete browser version of 2048.Fifteen PuzzleSlide numbered tiles through one empty space to restore the four-by-four board in order.Peg SolitaireJump pegs over adjacent pegs into empty holes and remove each jumped piece.Mahjong SolitaireRemove identical free tiles from a compact 72-tile layered layout until the board is empty.Tic-Tac-ToePlay the complete three-by-three noughts-and-crosses game against a deterministic browser opponent.Connect FourDrop discs into a seven-column grid and play a complete Connect Four match against the browser.

Questions about this collection

Which puzzles are generated to be solvable?

The Fifteen Puzzle starts from legal moves away from a solved board, and Card Pairs creates exact accessible pairs. Other random games avoid broader solvability promises unless documented.

Are puzzle states uploaded?

No. Play, saved sessions, and personal records remain in browser storage; existing site measurement does not include board positions or moves.

Which game is suitable for a short logic session?

Beginner Minesweeper, Easy Sudoku, Tic-Tac-Toe, and Card Pairs offer compact boards and clear stopping points.