MESON Chess Problem Database

Problem Display
PID: 239193 (8/8/8/4p2Q/2B2k2/8/5K1P/8 w - - 0 1)

Kozhakin, Vladimir Vladimirovich

Schach, 1987

8/8/8/4p2Q/2B2k2/8/5K1P/8

#2

4 + 2

15148 Sadier Collection 2021
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qg4#
  • Tries
    • 1.Ke2?
      • 1...Ke4
        • 2.Qg4#
      • 1...e4!
    • 1.Be6?
      • threat
        • 2.Qg4#
        • 2.Qh4#
        • 2.Qf5#
      • 1...e4
        • 2.Qf5#
      • 1...Ke4!
    • 1.Qg5+?
      • 1...Ke4
        • 2.Qg4#
      • 1...Kxg5!
    • 1.h3?
      • threat
        • 2.Qg4#
      • 1...Ke4
        • 2.Qg4#
      • 1...e4!
  • Keys
    • 1.h4!
      • threat
        • 2.Qf3#
      • 1...Ke4
        • 2.Qg4#
      • 1...e4
        • 2.Qg5#

Anticipated by 216174(1974)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR2(D)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAR2(D)
      • Refutation
        • P(b);
    • Try
      • B(C);
      • Threat
        • DUALS(3)
      • Vars
        • P(b);::QAR1(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR2(D)
      • Refutation
        • K(a);S_FLIGHT,XQ(D)
    • Try
      • P(B);
      • Threat
        • QAR1(D)
      • Vars
        • K(a);P-FLIGHT::QAR2(D)
      • Refutation
        • P(b);
  • Actual
    • P(B);
    • Threat
      • QAR1(D)
    • Vars
      • K(a);P-FLIGHT::QAR2(D)
      • P(b);SBLOCK::QAB1(D)
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