MESON Chess Problem Database

Problem Display
PID: 45025 (3Q4/5N2/3P4/1p6/4k1B1/1P6/5B2/5K2 w - - 0 1)

Planck, Charles

Sheffield Independent, 1884

(First published on Thu Sep 11 1884)

3Q4/5N2/3P4/1p6/4k1B1/1P6/5B2/5K2

#2

7 + 2

15351 SCPF/BCPS Black Books 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qa8#
  • Tries
    • 1.Qb6?
      • threat
        • 2.Qd4#
      • 1...Kf4
        • 2.Qd4#
      • 1...Kd5
        • 2.Qb7#
      • 1...Kd3!
    • 1.Qf6?
      • threat
        • 2.Qd4#
        • 2.Qf3#
        • 2.Qf5#
      • 1...Kd5
        • 2.Bf3#
        • 2.Qf3#
      • 1...Kd3!
    • 1.Qd7?
      • threat
        • 2.Qf5#
      • 1...Kf4
        • 2.Qf5#
      • 1...Kd5
        • 2.Bf3#
        • 2.Qb7#
      • 1...Kd3!
    • 1.Qa8+?
      • 1...Kf4
        • 2.Qf3#
      • 1...Kd3!
    • 1.Qc8?
      • threat
        • 2.Qf5#
      • 1...Kf4
        • 2.Qf5#
      • 1...Kd5
        • 2.Bf3#
        • 2.Qb7#
        • 2.Qa8#
      • 1...Kd3!
    • 1.Qh8?
      • threat
        • 2.Qd4#
      • 1...Kf4
        • 2.Qd4#
      • 1...Kd5
        • 2.Qh1#
        • 2.Qa8#
      • 1...Kd3!
  • Keys
    • 1.Qa5!
      • 1...Kd3
        • 2.Bf5#
      • 1...Kf4
        • 2.Qb4#
      • 1...Kd5
        • 2.Qa8#
      • 1...b4
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB(G)
  • Tries
    • Try
      • Q(G);
      • Threat
        • QAR1(G)
      • Vars
        • K(a);P-FLIGHT::QAR2(G)
        • K(a);S_FLIGHT::QAB(G)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(G);
      • Threat
        • DUALS(3)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(G);
      • Threat
        • QAB1(G)
      • Vars
        • K(a);P-FLIGHT::QAR1(G)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(G);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(G)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(G);
      • Threat
        • QAB1(G)
      • Vars
        • K(a);P-FLIGHT::QAR1(G)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(G);
      • Threat
        • QAR1(G)
      • Vars
        • K(a);P-FLIGHT::QAR2(G)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(G);
    • Vars
      • K(a);S_FLIGHT::B(D)
      • K(a);P-FLIGHT::QAR(G)
      • K(a);P_SPINP(b),S_FLIGHT::QAB(G)
      • P(b);OGATE::QAB1(G)
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