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The top and bottom images produce a dent or projection depending on whether viewed with cross- () or wall- () eyed vergence. An autostereogram is a two-dimensional (2D) image that can create the optical illusion of a three-dimensional (3D) scene. Autostereograms use only one image to accomplish the effect while normal stereograms require two.
Wilhelm Steinitz, who in 1889 claimed chess is a draw with best play. In chess, there is a consensus among players and theorists that the player who makes the first move (White) has an inherent advantage, albeit not one large enough to win with perfect play. This has been the consensus since at least 1889, when the first World Chess Champion ...
In chess, the player who moves first is called White and the player who moves second is called Black. Their pieces are the white pieces and the black pieces. The pieces are often not literally white and black, but usually contrasting light and dark colors. The 64 squares of the chessboard, which is colored in a checkered pattern, are likewise ...
Chess pieces are divided into two sets, usually light and dark colored, referred to as white and black, regardless of the actual color or design. The players of the sets are referred to as White and Black, respectively. Each set consists of sixteen pieces: one king, one queen, two rooks, two bishops, two knights, and eight pawns.
Evans Gambit. The Evans Gambit is a chess opening characterised by the moves: 2. Nf3 Nc6. 3. Bc4 Bc5. The Evans Gambit is an attacking line of the Giuoco Piano. White offers a pawn to divert the black bishop on c5. If Black accepts, White can follow up with c3 and d4, ripping open the centre, while also opening diagonals to play Ba3 or Qb3 at ...
The Hippopotamus Defence is a chess opening system employed by Black, consisting of a double fianchetto structure (bishops on b7 and g7) and a small pawn centre (pawns on d6 and e6). The knights are typically developed to e7 and d7 and the rook's pawns to a6 and h6. [1] This structure can be obtained by a wide variety of move orders but it ...
Owen's Defence (also known as the Queen's Fianchetto Defence[ 1 ]) is an uncommon chess opening defined by the moves: 1. e4 b6. By playing 1...b6, Black prepares to fianchetto the queen's bishop where it will participate in the battle for the centre. The downside of this plan is that White can occupy the centre with pawns and gain a spatial ...
Stonewall Attack. The Stonewall Attack is a chess opening characterized by White playing pawns to d4 and e3, bishop to d3, knight to d2, and then completing the Stonewall structure by playing pawns to c3 and f4. This set-up is usually achieved by a 1.d4 move order but transposition is also possible via Bird's Opening, 1.f4.