MESON Chess Problem Database

Problem Display
PID: 157609 (k3N3/P1R5/R2nK3/8/8/8/8/8 w - - 0 1)

Antipov, Viacheslav Pavlovich

Dserchinez, 1986

k3N3/P1R5/R2nK3/8/8/8/8/8

#2

5 + 2

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Sb7
      • 2.Rc8#
  • Tries
    • 1.Rc8+?
      • 1...Kb7
        • 2.a8Q#
      • 1...Sxc8!
  • Keys
    • 1.Rb7!
      • threat
        • 2.Rb8#
      • 1...Kxb7
        • 2.a8Q#
      • 1...Sxb7
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD,SBLOCK::R(D)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::P=Q
      • Refutation
        • S(a);XR(D)
  • Actual
    • R(D);
    • Threat
      • R1(D)
    • Vars
      • K(b);OGATE,S_FLIGHT,XR(D)::P=Q
      • S(a);SBLOCK,XR(D)::S(E)
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