MESON Chess Problem Database

Problem Display
PID: 29791 (3R4/3n2K1/4k3/8/3P4/Q2B4/8/8 w - - 0 1)

Lincoln, Robert A

Die Schwalbe, 1994

3R4/3n2K1/4k3/8/3P4/Q2B4/8/8

#2

5 + 2

2838 Fun with Chess Miniatures 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Se5
      • 2.Qd6#
      • 2.d5#
    • 1...Sb6
      • 2.Qd6#
    • 1...Sf6
      • 2.Qd6#
    • 1...Sb8
      • 2.Qd6#
    • 1...Sf8
      • 2.Qd6#
  • Tries
    • 1.Be4?
      • threat
        • 2.Re8#
      • 1...Se5
        • 2.Qd6#
        • 2.d5#
      • 1...Sb6
        • 2.Qd6#
      • 1...Sf6
        • 2.Qd6#
      • 1...Sb8
        • 2.Qd6#
      • 1...Sf8
        • 2.Qd6#
      • 1...Sc5!
    • 1.Bf5+?
      • 1...Kd5
        • 2.Qc5#
      • 1...Kxf5!
    • 1.Qc5?
      • threat
        • 2.Bc4#
        • 2.Bf5#
        • 2.Re8#
      • 1...Se5
        • 2.Qd6#
        • 2.Qxe5#
        • 2.d5#
      • 1...Sb6
        • 2.Bf5#
        • 2.Qd6#
        • 2.Qe5#
      • 1...Sf6
        • 2.Bf5#
        • 2.Qd6#
        • 2.Qe5#
      • 1...Sb8
        • 2.Bc4#
        • 2.Bf5#
        • 2.Qd6#
        • 2.Qe5#
      • 1...Sf8
        • 2.Bc4#
        • 2.Bf5#
        • 2.Qd6#
        • 2.Qe5#
      • 1...Sxc5!
    • 1.Qe7+?
      • 1...Kd5
        • 2.Qxd7#
      • 1...Kxe7!
    • 1.Qa4?
      • threat
        • 2.Qxd7#
      • 1...Kd5
        • 2.Qxd7#
      • 1...Kd6
        • 2.Qxd7#
      • 1...Ke7
        • 2.Qxd7#
      • 1...Sc5
        • 2.Qe8#
      • 1...Se5
        • 2.Qe8#
      • 1...Sb6
        • 2.Qe8#
      • 1...Sb8
        • 2.Qe8#
      • 1...Sf8
        • 2.Qe8#
      • 1...Sf6!
  • Keys
    • 1.Qa7!
      • threat
        • 2.Qxd7#
      • 1...Kd5
        • 2.Qxd7#
      • 1...Kd6
        • 2.Qxd7#
      • 1...Ke7
        • 2.Qxd7#
      • 1...Sc5
        • 2.Qf7#
      • 1...Se5
        • 2.d5#
      • 1...Sb6
        • 2.Qf7#
      • 1...Sf6
        • 2.Qf7#
      • 1...Sb8
        • 2.Qf7#
      • 1...Sf8
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(b);::QAR1(A)
  • Tries
    • Try
      • B(B);
      • Threat
        • R(E)
      • Vars
        • S(b);::QAR1(A)
      • Refutation
        • S(b);
    • Try
      • B(B);CHECK
      • Vars
        • K(a);P_SPINS(b),S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT,XB(B)
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Refutation
        • S(b);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P_SPINS(b),S_FLIGHT::QAR2(A),XS(b)
      • Refutation
        • K(a);P-FLIGHT,XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAB1(A),XS(b)
      • Vars
        • K(a);P_SPINS(b),S_FLIGHT::QAR2(A),XS(b)
        • K(a);P-FLIGHT,P_SPINS(b)::QAR1(A),XS(b)
        • K(a);P-FLIGHT::QAR1(A),XS(b)
        • S(b);OGATE::QAR2(A)
      • Refutation
        • S(b);
  • Actual
    • Q(A);
    • Threat
      • QAB1(A),XS(b)
    • Vars
      • K(a);P_SPINS(b),S_FLIGHT::QAR2(A),XS(b)
      • K(a);P-FLIGHT,P_SPINS(b)::QAR1(A),XS(b)
      • S(b);OGATE::QAB1(A)
      • S(b);SBLOCK::P(C)
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