MESON Chess Problem Database

Problem Display
PID: 234255 (1nr5/N1Np2Q1/pP1k1P2/3n1P2/3P1p2/8/8/4K3 w - - 0 1)

Kipping, Cyril Stanley

Chess World (The), 1949

1nr5/N1Np2Q1/pP1k1P2/3n1P2/3P1p2/8/8/4K3

#2

8 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Re8+
      • 2.Sxe8#
    • 1...Sc3
      • 2.Qe7#
    • 1...Se3
      • 2.Qe7#
    • 1...Sb4
      • 2.Qe7#
    • 1...Sxf6
      • 2.Qxf6#
    • 1...Se7
      • 2.Qxe7#
    • 1...Sc6
      • 2.Sxc8#
    • 1...a5
      • 2.Scb5#
  • Tries
    • 1.Qf8+?
      • 1...Se7
        • 2.Qxe7#
      • 1...Rxf8!
  • Keys
    • 1.f7!
      • threat
        • 2.Qe5#
      • 1...Re8+
        • 2.fxe8S#
      • 1...Ke7
        • 2.f8Q#
      • 1...Sf6
        • 2.Qxf6#
      • 1...Sc6
        • 2.Sxc8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • R(g);CHECK,N_GUARD::S(G),XR(g)
    • S(b);N_GUARD::QAB1(H)
    • S(b);OGATE,XP(E)::QAR2(H),XS(b)
    • S(b);N_GUARD::QAB1(H),XS(b)
    • S(f);SBLOCK::S(F),XR(g)
    • P(c);N_GUARD::S(G)
  • Tries
    • Try
      • Q(H);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAB1(H),XS(b)
      • Refutation
        • R(g);XQ(H)
  • Actual
    • P(E);
    • Threat
      • QAB1(H)
    • Vars
      • R(g);CHECK,OGATE::PXR(g)=S
      • K(d);S_FLIGHT::P=Q
      • S(b);N_GUARD::QAR2(H),XS(b)
      • S(f);SBLOCK::S(F),XR(g)
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