MESON Chess Problem Database

Problem Display
PID: 125339 (1Q1N4/N7/8/3k4/6pB/1K1P4/8/3R4 w - - 0 1)

Bogdanov, Evgeny Mikhailovich

Komsomolets Zaporozhya, 1972

1Q1N4/N7/8/3k4/6pB/1K1P4/8/3R4

#2

7 + 2

6490 yacpdb 2009
5454 Near Snap 2023

SOLUTION

  • SOUND
  • Tries
    • 1.Sc8?
      • threat
        • 2.Qd6#
      • 1...Kc5
        • 2.Qe5#
      • 1...Kd4!
    • 1.Sf7?
      • threat
        • 2.Qe5#
        • 2.Qd6#
      • 1...Kd4
        • 2.Qe5#
      • 1...Kc5
        • 2.Qd6#
      • 1...Ke6!
    • 1.Re1?
      • threat
        • 2.Qe5#
      • 1...Kd4
        • 2.Qd6#
      • 1...Kc5!
    • 1.Qb5+?
      • 1...Kd4
        • 2.Bf2#
      • 1...Kd6!
  • Keys
    • 1.Bg3!
      • threat
        • 2.Qe5#
        • 2.Qd6#
      • 1...Kd4
        • 2.Qe5#
      • 1...Kc5
        • 2.Qd6#

This anticipates 38982(1972), 12379(1978), 154638(1982), 256449(1983), 85323(1988), 241069(1989), 108589(1998), 262342(2014)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Threat
        • QAR1(F)
      • Vars
        • K(b);P-FLIGHT::QAR2(F)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P-FLIGHT::QAB1(F)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(A);
      • Threat
        • QAR1(F)
      • Vars
        • K(b);P-FLIGHT::QAR2(F)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);P-FLIGHT::B(D)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • B(D);
    • Threat
      • DUALS(2)
    • Vars
      • K(b);P-FLIGHT::QAB1(F)
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