Anonymous wrote on Sat, Feb 19, 2005 06:47 PM UTC:
Nightriders can give rise to some interesting chess situations. For
example:
White: Kd2, Pe2
Black: Kg8, Rd8, Nh7, Pd4
Black to move (N=nightrider)
1. ... Nf6+
2. e4 dxe3(e.p)+++
Which results in an unprecedented triple check.
Example #2:
White: Ke4, Rc4, Ne1, Nf2, Pf4, Pg5
Black: Ke6, Qa3, Rd7, Re7, Pf7, Pg6
White to move
1. Nc2+ Kd6+
2. Kd4+ Ke6+
3. Ke4+ Kd6+
4. Kd4+ Ke6+
5. Ke4+ Kd6+
etc.
This results in forced mutual perpetual check, which means that the
players have no choice but to continue delivering checks indefinitely,
unless the draw-by-repetition rule is invoked.