MESON Chess Problem Database

Problem Display
PID: 181922 (1B6/8/3N4/2p1k2P/2p1p1Q1/4p3/6P1/K7 w - - 0 1)

Gibbins, Norman Martin

British Chess Magazine, 1912

1B6/8/3N4/2p1k2P/2p1p1Q1/4p3/6P1/K7

#2

6 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qxe4#
  • Tries
    • 1.Sb5+?
      • 1...Kd5
        • 2.Qd7#
      • 1...Kf6!
    • 1.Sc8+?
      • 1...Kd5
        • 2.Qd7#
      • 1...Kf6
        • 2.Qg6#
      • 1...Kd4!
    • 1.Se8+?
      • 1...Kd5
        • 2.Qd7#
      • 1...Kd4!
  • Keys
    • 1.Qd7!
      • threat
        • 2.Se8#
      • 1...Kd4
        • 2.Sb5#
      • 1...Kf4
        • 2.Sf7#
      • 1...Kd5
        • 2.Sb5#
        • 2.Sf5#
        • 2.Sb7#
        • 2.Sf7#
        • 2.Sc8#
        • 2.Se8#
      • 1...Kf6
        • 2.Sxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(e);P-FLIGHT::QAB1(C),XP(c)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR2(C)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR2(C)
        • K(e);S_FLIGHT::QAR1(C)
      • Refutation
        • K(e);P_SPINP(c),S_FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR2(C)
      • Refutation
        • K(e);P_SPINP(c),S_FLIGHT
  • Actual
    • Q(C);
    • Threat
      • B(F)+S(E)
    • Vars
      • K(e);S_FLIGHT::QAR(C)+S(E),DCHECK
      • K(e);S_FLIGHT::B(F)+S(E)
      • K(e);S_FLIGHT::S(E),XP(c)
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