Part 1 How skill develops - the most important phases: "Attack something - and if its doesn't move, take it"; both opponents base their play on elementary traps; tactical operations without regard for the position; harmonious co-operation of the pieces and combinations; ability to find the right strategic plan. Part 2 Typical mistakes by young players: hasty moves and, in consequence, blunders; learning openings without understanding the ideas; reliance on general principles, without a concrete plan; underestimating the opponent's combative chances; disparity between aggressive and defensive ability; miscalculating variations and combinations; inadequate knowledge of basic endgames; implementing a wrong strategic plan; the problem of the clock in practical play. Part 3 Chessplayers of positional and combinational styles. Part 4 Developing a repertoire. Part 5 The experriences of a chess trainer: assessing games of young players; the anxiety of a trainer; the satisfaction of success.