MESON Chess Problem Database

Problem Display
PID: 282485 (K7/1P6/4Q3/1k3B2/1P6/P7/8/8 w - - 0 1)

Djulinac, Stevan

Politika, 1989

(First published on Thu Aug 31 1989)

K7/1P6/4Q3/1k3B2/1P6/P7/8/8

#2

6 + 1

15601 Albrecht-Leiss-Degener Collection 2025
5454 Near Snap 2025
3713 Snap 2025

SOLUTION

  • SOUND
  • Tries
    • 1.Qd7+?
      • 1...Kc4
        • 2.Qd3#
      • 1...Ka6
        • 2.Qc6#
      • 1...Kb6!
    • 1.Qc8?
      • 1...Ka6
        • 2.Qc6#
        • 2.b8Q#
        • 2.b8R#
      • 1...Kb6
        • 2.b8Q#
        • 2.b8R#
      • 1...Ka4!
    • 1.Qd6?
      • 1...Kc4
        • 2.Qd3#
      • 1...Ka4!
  • Keys
    • 1.Qe3!
      • 1...Ka4
        • 2.Bd7#
      • 1...Kc4
        • 2.Qd3#
      • 1...Ka6
        • 2.Bd3#
      • 1...Kc6
        • 2.Qc5#

This anticipates 169618(2002), 285034(2004), 262909(2008), 266069(2017), 268836(2022)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(D)
        • K(a);N_GUARD,S_FLIGHT::QAR2(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(a);N_GUARD,P-FLIGHT::P=Q
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(D)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(D);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::B(C)
      • K(a);N_GUARD,S_FLIGHT::QAB1(D)
      • K(a);N_GUARD,S_FLIGHT::QAR1(D)
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