MESON Chess Problem Database

Problem Display
PID: 157445 (2K1k3/6b1/2N5/1Q6/8/5r2/B7/8 w - - 0 1)

Lincoln, Robert A

The Problemist, 2015

2K1k3/6b1/2N5/1Q6/8/5r2/B7/8

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Se5+?
      • 1...Kf8
        • 2.Sg6#
      • 1...Ke7!
    • 1.Se7+?
      • 1...Kf8
        • 2.Sg6#
      • 1...Kxe7!
    • 1.Qd5?
      • threat
        • 2.Qd8#
      • 1...Kf8
        • 2.Qg8#
        • 2.Qd8#
      • 1...Rd3
        • 2.Qf7#
      • 1...Bf6
        • 2.Qf7#
        • 2.Qg8#
      • 1...Rb3!
    • 1.Qe5+?
      • 1...Kf8
        • 2.Qe7#
      • 1...Bxe5!
    • 1.Qg5?
      • threat
        • 2.Qe7#
        • 2.Qd8#
      • 1...Kf8
        • 2.Qe7#
        • 2.Qd8#
      • 1...Rb3
        • 2.Qe7#
      • 1...Rd3
        • 2.Qe7#
      • 1...Re3
        • 2.Qd8#
      • 1...Rf7
        • 2.Qd8#
      • 1...Bf6
        • 2.Qg8#
      • 1...Bf8
        • 2.Qd8#
      • 1...Rf6!
    • 1.Qh5+?
      • 1...Rf7
        • 2.Qxf7#
      • 1...Kf8!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Qe7#
      • 1...Kf8
        • 2.Qe7#
      • 1...Re3
        • 2.Qf7#
      • 1...Rf7
        • 2.Qxf7#
      • 1...Bf6
        • 2.Qf7#
      • 1...Bf8
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(c);P-FLIGHT::S(C)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(c);P-FLIGHT::S(C)
      • Refutation
        • K(c);P-FLIGHT,XS(C)
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • R(a);N_GUARD::QAB1(B)
      • Refutation
        • R(a);
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB1(B)
      • Refutation
        • B(b);XQ(B)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);::QAR1(B)
        • B(b);OGATE::QAR2(B)
        • B(b);SBLOCK::QAR1(B)
      • Refutation
        • R(a);
    • Try
      • Q(B);CHECK
      • Vars
        • R(a);N_GUARD,P_SPINR(a)::QAB1(B),XR(a)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • Q(B);
    • Threat
      • QAR1(B)
    • Vars
      • K(c);P-FLIGHT::QAB1(B)
      • R(a);N_GUARD::QAB1(B)
      • R(a);N_GUARD::QAB1(B),XR(a)
      • B(b);S_CUTR(a)::QAB1(B)
      • B(b);SBLOCK::QAB1(B)
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