MESON Chess Problem Database

Problem Display
PID: 255799 (8/8/1Q2N1k1/5RB1/6R1/8/3K4/8 w - - 0 1)

Chernyavsky, Mykola Vasilovich

Murashev, Pavel Aleksandrovich

3rd Prize, Mansfield-125 MT (Miniatures) (Kudesnik), 2019-2020

8/8/1Q2N1k1/5RB1/6R1/8/3K4/8

#2

6 + 1

SOLUTION

  • SOUND
  • Tries
    • 1.Sf8+?
      • 1...Kxf5
        • 2.Qe6#
      • 1...Kh5
        • 2.Rh4#
      • 1...Kg7!
    • 1.Be3+?
      • 1...Kh7
        • 2.Rh5#
      • 1...Kxf5!
    • 1.Bf4+?
      • 1...Kh7
        • 2.Rh5#
      • 1...Kxf5!
    • 1.Bh4+?
      • 1...Kh6
        • 2.Sf8#
      • 1...Kh7
        • 2.Rh5#
      • 1...Kxf5!
    • 1.Be7+?
      • 1...Kh6
        • 2.Sf8#
      • 1...Kh7
        • 2.Rh5#
      • 1...Kxf5!
    • 1.Bd8+?
      • 1...Kh6
        • 2.Sf8#
      • 1...Kh7
        • 2.Rh5#
      • 1...Kxf5!
    • 1.Rgf4?
      • 1...Kh5
        • 2.Sg7#
      • 1...Kh7!
    • 1.Rff4?
      • 1...Kh5
        • 2.Sg7#
      • 1...Kh7!
    • 1.Rf6+?
      • 1...Kh5
        • 2.Rh4#
      • 1...Kh7!
    • 1.Rf8?
      • 1...Kh7
        • 2.Qb1#
      • 1...Kh5!
    • 1.Qb1?
      • 1...Kh7
        • 2.Rf8#
      • 1...Kh5!
    • 1.Qb4?
      • 1...Kxf5
        • 2.Qe4#
      • 1...Kh5
        • 2.Be3#
      • 1...Kh7!
    • 1.Qb7?
      • threat
        • 2.Qf7#
      • 1...Kxf5
        • 2.Qe4#
      • 1...Kh5!
  • Keys
    • 1.Qd4!
      • 1...Kxf5
        • 2.Qe4#
      • 1...Kh5
        • 2.Be3#
      • 1...Kh7
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT,XR(C)::QAB1(E)
        • K(a);N_GUARD,S_FLIGHT::R1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(D);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::R(C)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • B(D);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::R(C)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • B(D);CHECK
      • Vars
        • K(a);N_GUARD,P-FLIGHT::QAR(E)+S(F)
        • K(a);N_GUARD,S_FLIGHT::R(C)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • B(D);CHECK
      • Vars
        • K(a);N_GUARD,P-FLIGHT::QAR(E)+S(F)
        • K(a);N_GUARD,S_FLIGHT::R(C)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • B(D);CHECK
      • Vars
        • K(a);N_GUARD,P-FLIGHT::QAR(E)+S(F)
        • K(a);N_GUARD,S_FLIGHT::R(C)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • R(B);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::S(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::S(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);CHECK
      • Vars
        • K(a);S_FLIGHT::R1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB(E)+R(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XR(C)::QAB1(E)
        • K(a);N_GUARD,S_FLIGHT::R(C)+B(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Threat
        • QAB1(E)
      • Vars
        • K(a);OGATEB,S_FLIGHT,XR(C)::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(E);
    • Vars
      • K(a);OGATEB,S_FLIGHT,XR(C)::QAB1(E)
      • K(a);N_GUARD,S_FLIGHT::R(C)+B(D)
      • K(a);N_GUARD,S_FLIGHT::QAR1(E)
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