MESON Chess Problem Database

Problem Display
PID: 238056 (8/2k5/8/3Q4/K2p4/1N5B/8/6B1 w - - 0 1)

Bogdanov, Evgeny Mikhailovich

2nd Prize, Robitnica Tribuna, 2000

8/2k5/8/3Q4/K2p4/1N5B/8/6B1

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sc5?
      • 1...Kb8
        • 2.Qb7#
      • 1...d3
        • 2.Sa6#
      • 1...Kb6!
    • 1.Qb7+?
      • 1...Kd6
        • 2.Bh2#
      • 1...Kd8
        • 2.Qd7#
      • 1...Kxb7!
    • 1.Qxd4?
      • threat
        • 2.Qb6#
      • 1...Kc6
        • 2.Qd7#
      • 1...Kb8
        • 2.Qa7#
      • 1...Kb7!
  • Keys
    • 1.Qb5!
      • 1...Kd6
        • 2.Qc5#
      • 1...Kd8
        • 2.Qd7#
      • 1...d3
        • 2.Qb6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Vars
        • K(b);S_FLIGHT::QAR1(E)
        • P(a);::S(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);S_FLIGHT::B(A)
        • K(b);OGATE,S_FLIGHT::QAR1(E)
      • Refutation
        • K(b);P-FLIGHT,XQ(E)
    • Try
      • Q(E);XP(a)
      • Threat
        • QAB1(E)
      • Vars
        • K(b);P-FLIGHT::QAB1(E)
        • K(b);S_FLIGHT::QAB1(E)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(E);
    • Vars
      • K(b);S_FLIGHT::QAB1(E)
      • K(b);S_FLIGHT::QAR1(E)
      • P(a);::QAB1(E)
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