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Kangaroo (Newton). compound of Knight and Alfil.[All Comments] [Add Comment or Rating]
H. G. Muller wrote on 2008-07-03 UTC
The Kangaroo is yet another Knight + Short-Range leaper compound with mating potential: King + Kangaroo vs King is generally won on all boards upto 10x10 (on 12x12 it is usually draw). On 8x8, only 192 positions (out of ~250,000) are not won with white to move: when the Kangaroo is on a corner square and attacked by the bare King diagonally, and its own King is too far away for the Kangaroo to leap into its save haven.

The longest mate against perfect defense on 8x8 is 35 moves. There are 260 such positions, e.g. w:Kb1, Kangaroo a2, b:Kb3 (white to move).