MESON Chess Problem Database

Problem Display
PID: 230275 (8/8/3Q4/8/2B3kP/8/6P1/7K w - - 0 1)

Ryabtsev, Volodimir Grigorovich

Zadachi i Etyudi, 2000

8/8/3Q4/8/2B3kP/8/6P1/7K

#2

5 + 1

5454 Near Snap 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Be2+?
      • 1...Kxh4
        • 2.Qf4#
      • 1...Kf5!
    • 1.Bf7?
      • 1...Kxh4
        • 2.Qf4#
      • 1...Kf5!
    • 1.Qf4+?
      • 1...Kh5
        • 2.Bf7#
        • 2.Qg5#
      • 1...Kxf4!
    • 1.Qf6?
      • threat
        • 2.Qg5#
      • 1...Kh5
        • 2.Be2#
        • 2.Qg5#
      • 1...Kg3!
  • Keys
    • 1.g3!
      • 1...Kf3
        • 2.Qf4#
      • 1...Kh3
        • 2.Be6#
      • 1...Kf5
        • 2.Qe6#
      • 1...Kh5
        • 2.Be2#

Anticipated by 19007(1911), 6333(1928)

This anticipates 226525(2004)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(C);CHECK
      • Vars
        • K(a);P-FLIGHT,XP(D)::QAR2(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(C);
      • Vars
        • K(a);P-FLIGHT,XP(D)::QAR2(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Refutation
        • K(a);P-FLIGHT,XQ(E)
    • Try
      • Q(E);
      • Threat
        • QAR1(E)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • P(B);
    • Vars
      • K(a);S_FLIGHT::QAR1(E)
      • K(a);S_FLIGHT::B(C)
      • K(a);S_FLIGHT::QAB1(E)
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