MESON Chess Problem Database

Problem Display
PID: 105387 (8/8/2B2p2/8/8/3k4/1B4PQ/4K3 w - - 0 1)

Kozhakin, Vladimir Vladimirovich

Lobtsov, V

Amirov MT, 1992

8/8/2B2p2/8/8/3k4/1B4PQ/4K3

#2

5 + 2

6490 yacpdb 2009
5454 Near Snap 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Qg3#
  • Tries
    • 1.Qg3+?
      • 1...Kc4
        • 2.Qc3#
      • 1...Kc2!
    • 1.Qh3+?
      • 1...Kc4
        • 2.Qc3#
      • 1...Kc2!
    • 1.Qh5?
      • threat
        • 2.Qe2#
      • 1...Ke3
        • 2.Qf3#
      • 1...Kc4
        • 2.Qb5#
      • 1...Kc2!
    • 1.g3?
      • threat
        • 2.Qe2#
      • 1...Ke3
        • 2.Qd2#
        • 2.Qe2#
      • 1...Kc4!
    • 1.g4?
      • threat
        • 2.Qe2#
      • 1...Ke3
        • 2.Qg3#
        • 2.Qd2#
      • 1...Kc4!
  • Keys
    • 1.Qb8!
      • threat
        • 2.Qb3#
      • 1...Kc2
        • 2.Be4#
      • 1...Ke3
        • 2.Qg3#
      • 1...Kc4
        • 2.Qb5#

Anticipated by 183663(1915), 157611(1986), 219468(1991)

This anticipates 245997(2009), 232490(2012)

This is a version of 157601

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR2(D)
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);
      • Threat
        • QAB1(D)
      • Vars
        • K(a);P-FLIGHT::QAR1(D)
        • K(a);S_FLIGHT::QAB1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(C);
      • Threat
        • QAB1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(C);
      • Threat
        • QAB1(D)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(D);
    • Threat
      • QAR2(D)
    • Vars
      • K(a);S_FLIGHT::B(E)
      • K(a);P-FLIGHT::QAR2(D)
      • K(a);S_FLIGHT::QAB1(D)
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