MESON Chess Problem Database

Problem Display
PID: 76831 (8/3p4/1p1K4/8/Qpk5/8/pP6/1B6 w - - 0 1)

Davey, David Murray

The Tablet, 1947

(First published on Sat Feb 1 1947)

8/3p4/1p1K4/8/Qpk5/8/pP6/1B6

#2

4 + 5

15239 Valois Notebooks 2016

SOLUTION

  • SOUND
  • Tries
    • 1.Qc2+?
      • 1...Kd4
        • 2.Qd3#
        • 2.Qe4#
      • 1...Kb5!
    • 1.Qc6+?
      • 1...Kb3
        • 2.Qc2#
      • 1...Kd4
        • 2.Qe4#
      • 1...dxc6!
    • 1.Qxa2+?
      • 1...Kb5
        • 2.Bd3#
      • 1...b3
        • 2.Qa4#
      • 1...Kd4!
    • 1.Qa6+?
      • 1...Kb3
        • 2.Qxa2#
      • 1...Kd4
        • 2.Qd3#
      • 1...b5!
  • Keys
    • 1.Qa8!
      • threat
        • 2.Qd5#
      • 1...Kb3
        • 2.Qxa2#
      • 1...Kd4
        • 2.Qe4#
      • 1...Kb5
        • 2.Bd3#
      • 1...b3
        • 2.Qa4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);CHECK,N_PINP(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(C);CHECK,N_PINP(b)
      • Vars
        • K(c);OGATE,S_FLIGHT::QAB1(C)
        • K(c);P-FLIGHT::QAR1(C)
      • Refutation
        • P(e);XQ(C)
    • Try
      • Q(C);CHECK,N_PINP(b),XP(a)
      • Vars
        • K(c);S_FLIGHT::B(A)
        • P(b);OGATEB,P_SPINP(b)::QAR2(C)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(C);CHECK,N_PINP(b)
      • Vars
        • K(c);S_FLIGHT::QAB1(C),XP(a)
        • K(c);OGATE,P-FLIGHT::QAR1(C)
      • Refutation
        • P(d);P_SPINP(d)
  • Actual
    • Q(C);N_PINP(b)
    • Threat
      • QAB1(C)
    • Vars
      • K(c);S_FLIGHT::QAB1(C),XP(a)
      • K(c);P-FLIGHT::QAR1(C)
      • K(c);S_FLIGHT::B(A)
      • P(b);OGATEB::QAR2(C)
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