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Broken canvas...
to move

After 1.g56 Black must leave the e-line
Three kings win against a lone one. here's an example. The first move forces black off the e-line because of fe4 followed by ge6 or vice versa, or on e97 immediately g67.

The second move prevents de9 because of ge3 followed by fe5.

  • d98 and d97 are followed by g38 and g37 respectively.
  • d92 is followed by 3.gd3-de2 4.fe5-e24x 5.de3