To your left you will see the daily puzzle. Each day has three puzzles of increasing difficulty. If you solve the puzzle, a green check mark appears next to the help button, if you get it wrong, a red x appears.
The Power of the Knight Fork tactic. The video on the right shows differing scenarios in which the Knight forks his opponent. (Vocab) In chess, a fork is a tactic whereby a single piece makes two or more direct attacks simultaneously. Most commonly two pieces are threatened, which is also sometimes called a double attack.)
is a special defensive maneuver. It is the only time in the game when more than
one piece may be moved during a turn. This move was invented in the 1500s to
help speed up the game and to help balance the offense and defense.The castling
move has some fairly rigid restrictions:
only occur if there are no pieces standing between the king and the rook.
king nor the rook to be castled with may have moved from its original position.
(The other rook may have already moved.)
can be no opposing piece that could possibly capture the king in his original
square, the square he moves through or the square that he ends the turn.
The king moves two squares toward the rook
he intends to castle with (this may be either rook). The rook then moves to the
square through which the king passed. Hopefully, the diagram to the left makes
this clear. If the king castles queen-side the rook must move three squares.
However on the king-side the rook only moves two squares.