Echesspedia

ICC

The Internet Chess Club (ICC) is a commercial Internet chess server created in 1985 devoted to the play and discussion of chess and chess variants. Among the services provided are: playing chess at time controls, a player rating system, based on the ELO system, live broadcast of grandmaster tournaments with professional audio commentary and text commentary, live audio interviews, private lessons by professionals (by player arrangement only, and at additional cost), a variety of chess variants…

IDEAL MATE

In composition a final position in which there is total economy and purity in use of the forces; every piece being involved and essential to the mate and no duplication of effort.

ILLEGAL MOVE

Any move that beaks one of the law of chess. Quite rare at high chess level let us mention the game James Mason-Szymon Winawer, London 1883 where Winnawer played  a Bishop’s move with his Knight, at Cambridge Spring 1904 where Karl Schlechter vs. Harry Pillsbury played a illegal move (131) with his King. Later Paul Motwani vs. Murey Chandler in 1990

IMITATOR

Fairy piece invented by T. Kok. It cannot be used by either side and which moves in exact imitation of the move that are played. The imitator is represented on a diagram by a large black dot.
In the following problem composed by Emmanuel Manolas, the piece on c5 is an Imitator. After each move of a white or black normal piece, the Imitator makes its move similar in direction and distance. If the Imitator finds an obstacle in its move or goes out of the board, then the move of the normal piece is illegal.

Helpmate in 4 moves.

1.Kf7[Imb6] Kh7[Imb5]
2.Kf8[Imb6] Kg6[Ima5]
3.Kg8[Imb5] Sc1[Imd4]
4.Kh8[Ime4] Kh7[Imf5]# (The white King boldly attacks. The black King can not capture the wK, because the Imitator trying to make the similar move is stopped by the Pawn).

IMMORTAL GAME

The name given by Ph. Hirschfeld to a friendly game played in annex of the London Tournament between Adolf Anderssen and Kieseritzky in 1851. Miguel Nadjorf used also Immortal Game for his brilliancy with Black against Glucksberg at Warsaw 1935. Also used for the game  Akiba Rubinstein vs. Hersh Rotlevy, Lodz 1907;  Savielly Tartakower vs. Gaza Maroczy Tepliz-Schönau 1922 and Aron Nimzowitsch vs Sämisch, Copenhagen 1923.

Immortal was used for a losing game by Dr. Werner Lauterbach for the game Bogdan Sliwa vs. David Bronstein at Gotha 1957, for a draw by Hans Müller at Vienna 1922 for the game Alexander Alekhine vs. Richard Reti.

According François Le Lionnais et Ersnt Maget, Immortal is also given to a game where White sacrifice his two Rooks.

IMMORTAL PROBLEM

The Problem composed by Dr. Conrad Bayer was chritened the Immortal Problem and for several decades ranked as one of the greatest extant compositions.

INDIAN THEME

A theme in chess composition composed in India by Rev. August Loveday of Bengal in 1845, in which checkmate must be delivered although stalemate seems inevitable.
A white unit controlling a square A move through that square (and still control it) and then is intercepted by a second white unit. The black King can so move on A and White mates by moving again his second unit.

INSIDE CHESS

Popular American monthly chess magazine founded and edited by IGM Yasser Seirawan which ran for 12 years and ended in 1999.

INTERFERENCE

The closure of the line of one piece by a second piece, thus limiting its movement and cutting it off from certain squares. Various names are given to particular types of interference, among them Grimshaw, Novotny, anti-Bristol, Holzhausen, Wurzburg-Plachutta and Plachutta .