MESON Chess Problem Database

Problem Display
PID: 186049 (8/8/8/2Q5/8/3k4/2N2P1R/3bK3 w - - 0 1)

Lincoln, Robert A

Problem Observer, 2017

8/8/8/2Q5/8/3k4/2N2P1R/3bK3

#2

5 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Sa3?
      • threat
        • 2.Qe3#
        • 2.Qc4#
      • 1...Bb3
        • 2.Qe3#
      • 1...Ke4!
    • 1.Rh4?
      • threat
        • 2.Sb4#
        • 2.Rd4#
        • 2.Qc4#
      • 1...Bxc2
        • 2.Rd4#
        • 2.Qe3#
        • 2.Qd4#
        • 2.Qc4#
      • 1...Bg4!
  • Keys
    • 1.f3!
      • threat
        • 2.Sb4#
        • 2.Rd2#
        • 2.Qd4#
      • 1...Bxc2
        • 2.Rd2#
      • 1...Bxf3
        • 2.Qd4#
      • 1...Be2
        • 2.Sb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::QAR1(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(D);
      • Threat
        • DUALS(3)
      • Refutation
        • B(a);
  • Actual
    • P(C);
    • Threat
      • DUALS(3)
    • Vars
      • B(a);XS(B)::R1(D)
      • B(a);XP(C)::QAR1(E)
      • B(a);::S(B)
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