MESON Chess Problem Database

Problem Display
PID: 76815 (R7/8/2kp4/B2p4/1K6/3P4/8/3Q4 w - - 0 1)

Butwillo, Brother

The Tablet, 1946

(First published on Sat Mar 30 1946)

R7/8/2kp4/B2p4/1K6/3P4/8/3Q4

#2

5 + 3

15239 Valois Notebooks 2016

SOLUTION

  • SOUND
  • Tries
    • 1.Qc2+?
      • 1...Kb7
        • 2.Qc8#
      • 1...Kd7!
    • 1.Qf3?
      • 1...Kb7
        • 2.Qxd5#
      • 1...Kd7!
    • 1.Qg4?
      • threat
        • 2.Qc8#
      • 1...Kb7
        • 2.Qc8#
      • 1...d4!
    • 1.Qc1+?
      • 1...Kb7
        • 2.Qc8#
      • 1...Kd7!
    • 1.Qh1?
      • 1...Kb7
        • 2.Qxd5#
      • 1...Kd7!
  • Keys
    • 1.Qh5!
      • 1...Kb7
        • 2.Qxd5#
      • 1...Kd7
        • 2.Qe8#
      • 1...d4
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);P_PINP(a)
      • Vars
        • K(b);S_FLIGHT::QAB(A),XP(a)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);P_PINP(a)
      • Vars
        • K(b);S_FLIGHT::QAB(A),XP(a)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(b);S_FLIGHT::QAB(A),XP(a)
      • K(b);S_FLIGHT::QAB1(A)
      • P(a);OGATE::QAB1(A)
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