MESON Chess Problem Database

Problem Display
PID: 146844 (K3R3/p3n3/3B1Q1N/1B1kN3/3p4/3p3b/q2p1pr1/8 w - - 0 1)

Dolginovich, Nikolai Osipovich

Canadian Chess Chat, 1983

K3R3/p3n3/3B1Q1N/1B1kN3/3p4/3p3b/q2p1pr1/8

#2

7 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qf3#
    • 1...Sf5
      • 2.Bc6#
    • 1...Sc6
      • 2.Bxc6#
    • 1...Sg6
      • 2.Bc6#
    • 1...Sc8
      • 2.Bc6#
    • 1...Sg8
      • 2.Bc6#
  • Tries
    • 1.Sc4?
      • threat
        • 2.Qe5#
      • 1...Ke4
        • 2.Bc6#
      • 1...Sc6
        • 2.Qf3#
      • 1...Sg6
        • 2.Qf3#
      • 1...Rg5!
    • 1.Bc4+?
      • 1...Ke4
        • 2.Qf3#
      • 1...Qxc4!
  • Keys
    • 1.Seg4!
      • threat
        • 2.Qe5#
      • 1...Ke4
        • 2.Qf5#
      • 1...Sc6
        • 2.Qe6#
      • 1...Sg6
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • K(h);S_FLIGHT::QAB1(D)
    • S(j);N_GUARD::B(A)
    • S(j);N_GUARD::B(A),XS(j)
  • Tries
    • Try
      • S(B);
      • Threat
        • QAR1(D)
      • Vars
        • K(h);P_SPINS(j),S_FLIGHT::B(A)
        • S(j);::QAB(D)
      • Refutation
        • R(d);
    • Try
      • B(A);CHECK
      • Vars
        • K(h);S_FLIGHT::QAB1(D)
      • Refutation
        • Q(a);XB(A)
  • Actual
    • S(B);
    • Threat
      • QAR1(D)
    • Vars
      • K(h);P_SPINS(j),S_FLIGHT::QAB1(D)
      • S(j);::QAB1(D)
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