MESON Chess Problem Database

Problem Display
PID: 255828 (8/R1Pk1P1n/R2P2NN/K5bp/np5B/8/8/3Q4 w - - 0 1)

ten Cate, Pieter

Probleemblad, 1984

8/R1Pk1P1n/R2P2NN/K5bp/np5B/8/8/3Q4

#2

10 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Kc8
      • 2.d7#
  • Tries
    • 1.Se5+?
      • 1...Kc8
        • 2.d7#
      • 1...Ke6!
    • 1.Sf8+?
      • 1...Kc8
        • 2.d7#
      • 1...Sxf8!
    • 1.Qxa4+?
      • 1...Kc8
        • 2.d7#
      • 1...Ke6!
    • 1.f8S+?
      • 1...Kc8
        • 2.d7#
      • 1...Ke8
        • 2.Qxa4#
        • 2.d7#
      • 1...Sxf8!
  • Keys
    • 1.Rc6!
      • threat
        • 2.c8Q#
      • 1...Kxc6
        • 2.c8Q#
        • 2.c8R#
      • 1...Ke6
        • 2.d7#
      • 1...Kc8
        • 2.d7#
      • 1...Bd8
        • 2.cxd8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(e);OGATE,S_FLIGHT::P(E)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(e);OGATE,S_FLIGHT::P(E)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(e);OGATE,S_FLIGHT::P(E)
      • Refutation
        • S(f);XS(F)
    • Try
      • Q(A);CHECK,XS(a)
      • Vars
        • K(e);OGATE,S_FLIGHT::P(E)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • P(J);CHECK
      • Vars
        • K(e);OGATE,S_FLIGHT::P(E)
      • Refutation
        • S(f);XS(J)
  • Actual
    • R(D);
    • Threat
      • P=Q
    • Vars
      • K(e);S_FLIGHT,XR(D)::P=Q
      • K(e);OGATE,S_FLIGHT::R(D)+P(E)
      • K(e);OGATE,S_FLIGHT::P(E)
      • B(c);OGATE,P_PINP(I)::PXB(c)=S
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