In Chess18 the starting position is randomized. The positions are a subset of the Fischer Random Chess (FRC) positions, namely only those with king on e1/e8 and rooks in the corners, which are 18 in number. These positions do not deviate as much from the standard position as do many other FRC positions. In all other respects Chess18 functions as normal chess. The castling rules are the same. The variant is designed to overcome the problem of opening monotony. The start position is automatically randomized before the first move.
One of the 18 positions that can occur after randomization.
Reference
Timber Moose Chess18
• You can download my free Chess18 program here, but you must own the software Zillions of Games to be able to run it (I recommend the download version).
• Don't miss my other chess variants.
© M. Winther 2023
