MESON Chess Problem Database

Problem Display
PID: 10692 (8/2Q5/8/N7/1kB5/8/7B/2K5 w - - 0 1)

Konikowski, Jerzy

Gazeta Czestochowska, 1967

8/2Q5/8/N7/1kB5/8/7B/2K5

#2

5 + 1

5454 Near Snap 2009
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sb3?
      • 1...Ka3
        • 2.Qa5#
      • 1...Ka4
        • 2.Qa5#
      • 1...Kc3!
    • 1.Sb7?
      • 1...Ka3
        • 2.Qa5#
      • 1...Ka4
        • 2.Qa5#
      • 1...Kc3!
    • 1.Bd6+?
      • 1...Kc3
        • 2.Qg7#
      • 1...Ka4!
    • 1.Bb3?
      • 1...Ka3
        • 2.Bd6#
        • 2.Qd6#
        • 2.Qc5#
        • 2.Qe7#
      • 1...Kb5!
    • 1.Qb6+?
      • 1...Ka3
        • 2.Qb3#
      • 1...Kc3
        • 2.Be5#
        • 2.Qb2#
      • 1...Ka4!
    • 1.Qb8+?
      • 1...Ka3
        • 2.Qb3#
      • 1...Kc3
        • 2.Be5#
        • 2.Qb2#
      • 1...Kxa5
        • 2.Qb5#
      • 1...Kc5
        • 2.Bg1#
        • 2.Qd6#
      • 1...Ka4!
    • 1.Qc5+?
      • 1...Kc3
        • 2.Be5#
        • 2.Bf1#
        • 2.Be2#
        • 2.Bb5#
        • 2.Ba6#
      • 1...Ka4
        • 2.Bb3#
      • 1...Kxc5!
    • 1.Qc6?
      • 1...Ka3
        • 2.Bd6#
      • 1...Kxa5
        • 2.Qb5#
      • 1...Kc3!
    • 1.Qa7?
      • 1...Ka3
        • 2.Sc6#
      • 1...Ka4
        • 2.Sc6#
      • 1...Kc3!
  • Keys
    • 1.Qd7!
      • 1...Ka3
        • 2.Bd6#
      • 1...Kc3
        • 2.Qd2#
      • 1...Kxa5
        • 2.Qb5#
      • 1...Kc5
        • 2.Qd6#

This anticipates 66760(1967), 219856(1974), 95064(1984), 161761(1997), 165525(1998), 186833(2000), 53567(2004), 168594(2005), 153215(2011)

FEATURES

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