Insane Ninja Chess is played like standard chess except for following modifications:

1. Flexible Castling - The king can castle by moving 1 to 4 squares towards rook. The rook always ends up next to the king on the other side as in standard chess. The same rules: cannot castle out of check, king cannot pass over squares attacked by enemy etc apply.
   The choice of castling depends on whether it is more desirable to immediately have the rook in the center file or the king tucked away at the wing.

   Note: When carrying out 1 step castling, Zillions pops up a box asking to choose a move. The second move indicating kings move AND the rook to move to king square is the castling move.

2. The standard pawn move is modified slightly – it can now move 1,2, or 3 squares initially. It can also move two spaces forward if it moved only 1 space or captured from original position.

   En-passant is modified to accommodate this. A pawn that attempts to bypass an enemy pawn by making a double or triple move is captured En-passant.

   This En-passant only applied to standard pawns. Ninja pawns cannot capture or be captured this way.

3. Pawns and ninja pawns promote in the last rank to any piece.

4. The larger 104 Square board, and the movement of the new pieces: the Ninja Pawn, the Insane Ninja and the Leaping Ninja Guard.

5. 4 Ninja Pawns can be dropped into an empty space on 2nd rank (1 per turn). The ninja pawn can also be pushed forward 1-multiple spaces towards center on the same move.

For full details of the moves please see: http://chess.computerwebservices.net/insane.php

*** Instructions for Dropping Ninja Pawns ****

This special pawn can move/capture like a regular pawn as well as move 1 space sideways. When in enemy territory it can also capture 1 space sideways.
It can move 1-multiple spaces toward the center and en-passant does not apply.

Up to 4 Ninja Pawns can be dropped (one on each turn) to the second rank, and you can optionally make the forward thrust in the same move.

Clicking on an empty square (on rank 9 for black or rank 2 for white) will drop a ninja pawn. The program then waits for you to make the forward thrusting move.
If you choose not to make the forward move, CLICK ON the ICON for PASS MOVE or from the menu: Select PLAY and then choose PASS MOVE.