Explore puzzles by category
Place numbers 1-9 without repeating in rows, columns, or boxes
Move disks between pegs to solve the classic puzzle
Find all valid Sets from the card attribute combinations
Fill the grid so each row and column has unique numbers satisfying cage operations
Analyze the pattern in the 3×3 matrix and select the shape that completes it
Guess the hidden word using letter clues
Remember and compare positions from N steps back
Memorize and repeat color sequences to train serial recall
Remember and reproduce grid patterns for visual memory training
Find matching card pairs to train visual and associative memory
Track position and color simultaneously, comparing with N steps back
Use number clues to paint cells and reveal the picture
Find the rotated version of the original shape
Recreate the target pattern using block tiles
Place all pieces to fill the silhouette with no gaps
Compare two images and find the differences
Find the target shape among distractors as fast as you can
Connect numbers and letters in order
Identify ink colors to train inhibitory control
Identify center arrows to train selective attention
Tap for green circles, hold back for red — response inhibition training
Train cognitive flexibility through rule switching
Connect same-colored dots with lines and fill every cell
