MESON Chess Problem Database

Problem Display
PID: 11935 (5Q2/8/4p2K/8/6kp/8/7P/7R w - - 0 1)

Bogdanov, Evgeny Mikhailovich

Prapor peremogi, 1973

5Q2/8/4p2K/8/6kp/8/7P/7R

#2

4 + 3

3296 Shakhmatny zadachi miniaturi 1987
145 StrateGems 2003

SOLUTION

  • SOUND
  • Sets
    • 1...Kh3
      • 2.Qf3#
  • Tries
    • 1.Kg6?
      • 1...Kh3
        • 2.Qf3#
      • 1...e5
        • 2.Qf5#
      • 1...h3!
    • 1.Rf1?
      • threat
        • 2.Qf3#
      • 1...h3
        • 2.Rf4#
        • 2.Qb4#
        • 2.Qf4#
      • 1...Kh3!
    • 1.Qf4+?
      • 1...Kh3
        • 2.Qf3#
      • 1...Kxf4!
    • 1.Qf6?
      • 1...Kh3
        • 2.Qf3#
      • 1...h3
        • 2.Rg1#
      • 1...e5!
  • Keys
    • 1.Qf2!
      • threat
        • 2.h3#
      • 1...Kh3
        • 2.Qf3#
      • 1...h3
        • 2.Rg1#

FEATURES

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