MESON Chess Problem Database

Problem Display
PID: 232372 (5B2/k7/2K5/8/8/8/1P4Q1/8 w - - 0 1)

Speckmann, Werner

Deutsche Schachzeitung, 1978

5B2/k7/2K5/8/8/8/1P4Q1/8

#2

4 + 1

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Kc5?
      • 1...Ka6
        • 2.Qa8#
      • 1...Kb8!
    • 1.Bc5+?
      • 1...Ka8
        • 2.Kc7#
        • 2.Qg8#
      • 1...Kb8
        • 2.Qg8#
      • 1...Ka6!
    • 1.Bd6?
      • 1...Ka8
        • 2.Kb6#
      • 1...Ka6!
    • 1.Qg3?
      • 1...Ka6
        • 2.Qa3#
      • 1...Ka8!
    • 1.Qg7+?
      • 1...Ka8
        • 2.Qb7#
      • 1...Kb8
        • 2.Qb7#
      • 1...Ka6!
  • Keys
    • 1.Qg8!
      • 1...Ka6
        • 2.Qa2#
      • 1...Ka8
        • 2.Bc5#
      • 1...Kb8
        • 2.Bc5#

FEATURES

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