MESON Chess Problem Database

Problem Display
PID: 254905 (7B/5BR1/7R/8/3k4/8/3N1Np1/2K3Q1 w - - 0 1)

Markov, Evgeny Viktorovich

Zadachi i Etyudi, 2006

7B/5BR1/7R/8/3k4/8/3N1Np1/2K3Q1

#2

8 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Rg4#
  • Tries
    • 1.Sd1+?
      • 1...Kd3
        • 2.Bc4#
        • 2.Qe3#
      • 1...Ke5!
    • 1.Sd3+?
      • 1...Kc3
        • 2.Rg3#
      • 1...Kxd3!
    • 1.Sfe4+?
      • 1...Kd3
        • 2.Bc4#
      • 1...Ke5!
    • 1.Sg4+?
      • 1...Kd3
        • 2.Qe3#
      • 1...Kc3!
    • 1.Rh5?
      • threat
        • 2.Rg3#
      • 1...Kc3
        • 2.Rg4#
      • 1...Ke3!
    • 1.Re6?
      • threat
        • 2.Rg5#
      • 1...Kc3
        • 2.Rg4#
      • 1...Kd5
        • 2.Rg5#
      • 1...Kc5!
    • 1.Rg4+?
      • 1...Ke3
        • 2.Re4#
        • 2.Re6#
        • 2.Qe1#
      • 1...Kc5!
    • 1.Qe1?
      • threat
        • 2.Sb3#
        • 2.Rg5#
      • 1...Kc3
        • 2.Sb3#
        • 2.Sf3#
        • 2.Rg4#
      • 1...Kc5!
  • Keys
    • 1.Bc4!
      • 1...Kc3
        • 2.Rb7#
      • 1...Ke3
        • 2.Sh3#
      • 1...Kc5
        • 2.Sd3#
      • 1...Ke5
        • 2.Rf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);N_GUARD,S_FLIGHT::B(H)+R(G)
  • Tries
    • Try
      • S(D);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(b);S_FLIGHT::B(H)+R(G)
      • Refutation
        • K(b);P-FLIGHT,XS(D)
    • Try
      • S(D);CHECK
      • Vars
        • K(b);N_GUARD,P-FLIGHT::B(F)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(E);
      • Threat
        • B(H)+R(G)
      • Vars
        • K(b);N_GUARD,S_FLIGHT::B(H)+R(G)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(E);
      • Threat
        • B(H)+R(G)
      • Vars
        • K(b);N_GUARD,S_FLIGHT::B(H)+R(G)
        • K(b);P-FLIGHT::R(G)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(G);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • B(F);
    • Vars
      • K(b);N_GUARD,S_FLIGHT::B(H)+R(G)
      • K(b);N_GUARD,S_FLIGHT::QAB(B)+S(D)
      • K(b);N_GUARD,S_FLIGHT::QAB(B)+S(D),DCHECK
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