MESON Chess Problem Database

Problem Display
PID: 265961 (6Q1/1K1B1P1n/8/2k2P2/2Np4/6p1/1N1P4/4n1b1 w - - 0 1)

Burger, Robert Eugene

The Problemist, 1996

6Q1/1K1B1P1n/8/2k2P2/2Np4/6p1/1N1P4/4n1b1

#2

8 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Sg5
      • 2.f8Q#
      • 2.f8B#
    • 1...Sf6
      • 2.f8Q#
      • 2.f8B#
  • Tries
    • 1.Qxg3?
      • threat
        • 2.Qd6#
      • 1...Kb4
        • 2.Qa3#
      • 1...Kd5
        • 2.Qe5#
      • 1...Bh2!
    • 1.Qg6?
      • threat
        • 2.Qd6#
      • 1...Kb4
        • 2.Qb6#
      • 1...Kd5
        • 2.Qc6#
      • 1...Sf6!
    • 1.Qa8?
      • threat
        • 2.Qa5#
      • 1...Kb4
        • 2.Qa3#
      • 1...Kd5
        • 2.Kb6#
      • 1...d3!
    • 1.Qc8+?
      • 1...Kd5
        • 2.Qc6#
      • 1...Kb4!
    • 1.Qf8+?
      • 1...Kd5
        • 2.Bc6#
      • 1...Sxf8!
  • Keys
    • 1.Qb8!
      • threat
        • 2.Qd6#
      • 1...Kb4
        • 2.Kc6#
      • 1...Kd5
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(f);N_GUARD::P=Q
  • Tries
    • Try
      • Q(H);XP(c)
      • Threat
        • QAB1(H)
      • Vars
        • K(e);N_GUARD,S_FLIGHT::QAB1(H)
        • K(e);N_GUARD,P-FLIGHT::QAR1(H)
      • Refutation
        • B(b);
    • Try
      • Q(H);
      • Threat
        • QAB1(H)
      • Vars
        • K(e);N_GUARD,S_FLIGHT::QAR2(H)
        • K(e);N_GUARD,P-FLIGHT::QAB1(H)
      • Refutation
        • S(f);
    • Try
      • Q(H);
      • Threat
        • QAR2(H)
      • Vars
        • K(e);N_GUARD,S_FLIGHT::QAB1(H)
        • K(e);P-FLIGHT::QAB(H)+K(E)
      • Refutation
        • P(d);
    • Try
      • Q(H);CHECK
      • Vars
        • K(e);N_GUARD,P-FLIGHT::QAB1(H)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(H);CHECK
      • Vars
        • K(e);P-FLIGHT,S_CUTS(f)::B(F)
      • Refutation
        • S(f);XQ(H)
  • Actual
    • Q(H);
    • Threat
      • QAB1(H)
    • Vars
      • K(e);S_FLIGHT::QAR(H)+K(E)
      • K(e);N_GUARD,P-FLIGHT::QAR1(H)
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