MESON Chess Problem Database

Problem Display
PID: 160372 (4k1B1/2R1n3/3B4/8/8/8/3QK3/8 w - - 0 1)

Lincoln, Robert A

British Chess Magazine, 2007

4k1B1/2R1n3/3B4/8/8/8/3QK3/8

#2

5 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Qe3?
      • threat
        • 2.Qxe7#
      • 1...Kd8
        • 2.Qxe7#
      • 1...Kf8!
    • 1.Qh6?
      • 1...Kd8
        • 2.Qf8#
      • 1...Sxg8
        • 2.Qf8#
      • 1...Sd5
        • 2.Qf8#
      • 1...Sf5
        • 2.Qf8#
      • 1...Sc6
        • 2.Qf8#
      • 1...Sc8
        • 2.Qf8#
      • 1...Sg6!
  • Keys
    • 1.Qg5!
      • threat
        • 2.Qxe7#
      • 1...Kd8
        • 2.Qxe7#
      • 1...Kf8
        • 2.Rc8#
      • 1...Sxg8
        • 2.Qxg8#
      • 1...Sd5
        • 2.Bf7#
      • 1...Sf5
        • 2.Bf7#
      • 1...Sc6
        • 2.Bf7#
      • 1...Sg6
        • 2.Bf7#
      • 1...Sc8
        • 2.Bf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);P_PINS(a)
      • Threat
        • QAR1(A),XS(a)
      • Vars
        • K(b);N_SPINS(a),P-FLIGHT::QAB1(A),XS(a)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
        • S(a);XB(E)::QAR1(A)
        • S(a);::QAR1(A)
      • Refutation
        • S(a);
  • Actual
    • Q(A);
    • Threat
      • QAR1(A),XS(a)
    • Vars
      • K(b);P-FLIGHT,P_SPINS(a)::QAB1(A),XS(a)
      • K(b);P-FLIGHT,P_SPINS(a)::R(D)
      • S(a);OGATE,XB(E)::QAR2(A),XS(a)
      • S(a);::B(E)
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