MESON Chess Problem Database

Problem Display
PID: 258612 (2b3Q1/1p1pK2R/1P1R1p2/5k2/3P4/6P1/4P3/8 w - - 0 1)

Geary, William

English Mechanic and World of Science, 1900

(First published on Fri Nov 16 1900)

2b3Q1/1p1pK2R/1P1R1p2/5k2/3P4/6P1/4P3/8

#2

8 + 5

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Re6?
      • threat
        • 2.Rh5#
        • 2.e4#
      • 1...d5
        • 2.Rh5#
      • 1...dxe6!
    • 1.Rxd7?
      • 1...Ke4
        • 2.Qe6#
      • 1...Bxd7!
    • 1.Qd5+?
      • 1...Kg6
        • 2.Qh5#
      • 1...Kg4!
    • 1.Qf7?
      • 1...Kg4
        • 2.Qg6#
      • 1...Kg5
        • 2.Qh5#
      • 1...Ke4!
  • Keys
    • 1.Qe8!
      • 1...Ke4
        • 2.Kxf6#
      • 1...Kg4
        • 2.Qg6#
      • 1...Kg5
        • 2.Qh5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);
      • Threat
        • DUALS(2)
      • Vars
        • P(d);::R(G)
      • Refutation
        • P(d);XR(E)
    • Try
      • R(E);XP(d)
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR2(H)
      • Refutation
        • B(e);XR(E)
    • Try
      • Q(H);CHECK
      • Vars
        • K(a);OGATE,P_SPINP(b),S_FLIGHT::QAB1(H)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(H);P_PINP(b)
      • Vars
        • K(a);N_GUARD,N_SPINP(b),S_FLIGHT::QAR2(H)
        • K(a);N_GUARD,N_SPINP(b),P-FLIGHT::QAR1(H)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
  • Actual
    • Q(H);
    • Vars
      • K(a);S_FLIGHT::QAR(H)+K(F),XP(b)
      • K(a);N_GUARD,S_FLIGHT::QAR2(H)
      • K(a);N_GUARD,P-FLIGHT::QAR1(H)
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