MESON Chess Problem Database

Problem Display
PID: 263564 (8/KBRb4/3k4/8/3B4/8/8/2Q5 w - - 0 1)

Murashev, Pavel Aleksandrovich

6th Place, SuperProblem 006. TT, 2012

8/KBRb4/3k4/8/3B4/8/8/2Q5

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Bh3
      • 2.Qc6#
    • 1...Bg4
      • 2.Qc6#
    • 1...Bf5
      • 2.Qc6#
    • 1...Bc6
      • 2.Qxc6#
    • 1...Be6
      • 2.Qf4#
      • 2.Qc5#
      • 2.Qc6#
    • 1...Bc8
      • 2.Qc6#
  • Tries
    • 1.Qa3+?
      • 1...Kxc7
        • 2.Bb6#
      • 1...Ke6!
    • 1.Qf4+?
      • 1...Ke6
        • 2.Qf6#
      • 1...Ke7!
    • 1.Qh6+?
      • 1...Kxc7
        • 2.Bb6#
        • 2.Qb6#
      • 1...Be6
        • 2.Qf4#
        • 2.Qh2#
      • 1...Ke7!
  • Keys
    • 1.Qg5!
      • threat
        • 2.Qe5#
      • 1...Ke6
        • 2.Qf6#
      • 1...Kxc7
        • 2.Be5#
      • 1...Bf5
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • B(b);N_GUARD::QAR1(A)
    • B(b);N_GUARD::QAR1(A),XB(b)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT,XR(E)::B(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);N_GUARD,P-FLIGHT,S_CUTB(b)::QAR1(A)
      • Refutation
        • K(a);P_SPINB(b),S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P_SPINB(b),S_FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • K(a);N_GUARD,P-FLIGHT,S_CUTB(b)::QAR1(A)
      • K(a);N_GUARD,S_FLIGHT,XR(E)::B(B)
      • B(b);::QAB1(A)
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