I.  The Language Oasis

  Puzzles
  Charades
  Associative Puzzles. Associative Chains.
  Anagrams
  Metagrams. Metagrams with a «saddle»
  Ciphertexts
  Intellectual Training
  Language Puzzles
  Antonyms and Synonyms
  Homonyms. Homographs. Homophones
  General Awareness
  Revealing the Essential
  Generalization
  Classification
  What is Unnecessary?
  Analogies
  Similes
  Sayings and Proverbs

II. The Mathematical Oasis

  Heuristic Problems
  Roman Numbers. “Matches” Problems with Roman Numbers.
 “Matches” Problems
  Spaces and Intervals
  Problems from the Calendar
  Clock Problems
  Sequences
  Arithmetical Problems
  The cut-and-try method. Integer-valued Solutions.
 The Least Common Multiple
  The Euler Circles
  Intersection and Addition of Sets
  Parts Problems_1. The Non-verbal Level.
  Parts Problems _2. The Verbal Level.
  Diagrams
  Motion Problems
  The Problems Solved from the End
  Proportions
  Proofs

III. The Numerical Oasis

  Regularities
  The Kingdom of Palindromes
  Words-palindromes
  Numbers-palindromes
  The Forest School of Gnomes
  Hours-palindromes
  Dates-palindromes.
  The Palindrome Time Machine
  Figures-palindromes
  Properties of Numbers
  Divisibility of Numbers
  Representation of Numbers
  Calculation of Digits
  Inequalities
  Restoration of Numbers

IV. The Geometrical Oasis

  A Picture with a Stroke of a Pen
  Location
  Partition
  Perimeter and Square Problems
  Land Surveyor   

V. The Logical Oasis

  Family Relations Problems
  False Signs
  Truth table
  The Method of Exclusion
  Inferences
  Consistency
  Location Problems
  Camping
  Sudoku

VI. The Combinatorial Oasis

  Combinatorics
  Puzzles from the “Black Box”

VII. The Strategic Oasis

  Quick-wittedness
  Pouring Problems
  Weighting Problems
  Transportation Problems
  The Legend about the Hanoi Tower
  Superpuzzles for the whole Family
  The Strict Laws of Ancient Kingdoms

VIII. The Trainings Oasis

  Spatial Imagination
  The Attention Training

IX. The Oasis of Joy

  Funny Questions

X. The Curiosity Oasis

  Multiplication in Old Times