MESON Chess Problem Database

Problem Display
PID: 234709 (4K3/1B4p1/4k3/7Q/8/8/p4N2/8 w - - 0 1)

Lincoln, Robert A

Kudesnik, 2012

4K3/1B4p1/4k3/7Q/8/8/p4N2/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Bd5+?
      • 1...Kf6
        • 2.Se4#
        • 2.Sg4#
      • 1...Kd6!
    • 1.Bc8+?
      • 1...Kf6
        • 2.Se4#
        • 2.Sg4#
        • 2.Qf5#
      • 1...Kd6!
    • 1.Qf7+?
      • 1...Kd6
        • 2.Qe7#
      • 1...Ke5!
  • Keys
    • 1.Sg4!
      • threat
        • 2.Qg6#
        • 2.Qd5#
        • 2.Qe5#
      • 1...Kd6
        • 2.Qe5#
      • 1...g5
        • 2.Qg6#
      • 1...a1Q
        • 2.Qd5#
      • 1...a1B
        • 2.Qd5#
      • 1...g6
        • 2.Qxg6#
        • 2.Qd5#
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(C);CHECK
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • B(C);CHECK
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(B)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(A);
    • Threat
      • DUALS(3)
    • Vars
      • K(b);P-FLIGHT::QAB1(B)
      • P(c);::QAR2(B)
      • P(a);::QAB1(B)
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