Editing Cylinder chess (section)

== In chess problems ==
{{Chess diagram  
 |tleft
 | 
 |  |  |  |  |  |  |  |  
 |  |  |  |  |  |  |  |  
 |  |  |pd|  |  |  |  |rl
 |  |kd|pd|  |  |  |  |  
 |  |  |  |  |  |  |  |rl
 |kl|  |  |  |  |  |  |  
 |  |  |  |  |  |  |  |  
 |  |  |  |  |  |  |  |  
 |White to play and mate in two
}}

The diagram shows a cylinder chess problem that allows null moves. The move 1.Rg4, threatening 2.Rg5#, fails due to 1...Ka5. The solution is to put Black in [[zugzwang]] by playing 1.Rh4, moving the rook on h4 to its own square; then, after either 1...Ka5 or 1...c4, 2.R4h5# is mate.
{{clear}}