MESON Chess Problem Database

Problem Display
PID: 62222 (3K4/5BPP/2P2P2/QRp1k1NR/2P1p3/4p2P/1P2P3/8 w - - 0 1)

Gvozdjak, Peter

Die Schwalbe, 1983

3K4/5BPP/2P2P2/QRp1k1NR/2P1p3/4p2P/1P2P3/8

#2

14 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qc3#
    • 1...Kd6
      • 2.Qc7#
  • Tries
    • 1.Ke7?
      • threat
        • 2.Se6#
      • 1...Kd4
        • 2.Qc3#
      • 1...Kf5
        • 2.Se6#
      • 1...Kf4!
    • 1.Sf3+?
      • 1...Kf4
        • 2.Qc7#
      • 1...Kd6
        • 2.Qc7#
      • 1...Kxf6!
    • 1.Se6+?
      • 1...Kd6
        • 2.Qc7#
      • 1...Kxf6!
    • 1.Be6?
      • 1...Kd4
        • 2.Qc3#
      • 1...Kf4
        • 2.Qc7#
      • 1...Kd6
        • 2.Qc7#
      • 1...Kxf6!
    • 1.Bg6?
      • 1...Kd4
        • 2.Qc3#
      • 1...Kf4
        • 2.Qc7#
      • 1...Kd6
        • 2.Qc7#
      • 1...Kxf6!
    • 1.g8Q?
      • 1...Kd4
        • 2.Qc3#
      • 1...Kf4
        • 2.Se6#
      • 1...Kd6
        • 2.Qc7#
      • 1...Kxf6
        • 2.Sxe4#
      • 1...Kf5!
    • 1.g8S?
      • 1...Kd4
        • 2.Qc3#
      • 1...Kf5
        • 2.Se6#
      • 1...Kd6
        • 2.Qc7#
      • 1...Kf4!
  • Keys
    • 1.Rxc5+!
      • 1...Kd4
        • 2.Se6#
      • 1...Kf4
        • 2.Qc7#
      • 1...Kd6
        • 2.Sxe4#
      • 1...Kxf6
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(d);N_SPINP(c),S_FLIGHT::QAB1(E)
  • Tries
    • Try
      • K(N);S_FLIGHT
      • Threat
        • R(H)+S(G)
      • Vars
        • K(d);N_SPINP(c),S_FLIGHT::QAB1(E)
        • K(d);P-FLIGHT::R(H)+S(G)
      • Refutation
        • K(d);N_SPINP(c),S_FLIGHT
    • Try
      • S(G);CHECK
      • Vars
        • K(d);N_SPINP(c),S_FLIGHT::QAB(E)
        • K(d);N_SPINP(c),S_FLIGHT::QAB1(E)
      • Refutation
        • K(d);N_SPINP(c),S_FLIGHT,XP(J)
    • Try
      • S(G);CHECK
      • Vars
        • K(d);N_SPINP(c),S_FLIGHT::QAB1(E)
      • Refutation
        • K(d);N_SPINP(c),S_FLIGHT,XP(J)
    • Try
      • B(K);
      • Vars
        • K(d);N_SPINP(c),S_FLIGHT::QAB1(E)
        • K(d);N_SPINP(c),S_FLIGHT::QAB(E)
      • Refutation
        • K(d);N_SPINP(c),S_FLIGHT,XP(J)
    • Try
      • B(K);
      • Vars
        • K(d);N_SPINP(c),S_FLIGHT::QAB1(E)
        • K(d);N_SPINP(c),S_FLIGHT::QAB(E)
      • Refutation
        • K(d);N_SPINP(c),S_FLIGHT,XP(J)
    • Try
      • P(L);
      • Vars
        • K(d);N_SPINP(c),S_FLIGHT::QAB1(E)
        • K(d);N_SPINP(c),S_FLIGHT::S(G)
        • K(d);N_SPINP(c),S_FLIGHT,XP(J)::S(G),XP(b)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • P(L);
      • Vars
        • K(d);N_SPINP(c),S_FLIGHT::QAB1(E)
        • K(d);P-FLIGHT::R(H)+S(G)
      • Refutation
        • K(d);N_SPINP(c),S_FLIGHT
  • Actual
    • R(F);CHECK,XP(c)
    • Vars
      • K(d);S_FLIGHT::S(G)
      • K(d);S_FLIGHT::QAB(E)
      • K(d);S_FLIGHT::S(G),XP(b)
      • K(d);S_FLIGHT,XP(J)::QAB(E)
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