MESON Chess Problem Database

Problem Display
PID: 234757 (8/8/8/7p/4N3/5b1k/8/Q3B1K1 w - - 0 1)

Lincoln, Robert A

Kudesnik, 2015

8/8/8/7p/4N3/5b1k/8/Q3B1K1

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bg4
      • 2.Sg5#
  • Tries
    • 1.Qe5?
      • threat
        • 2.Qg3#
      • 1...h4
        • 2.Sf2#
      • 1...Kg4!
    • 1.Qf6?
      • threat
        • 2.Qh4#
        • 2.Qxf3#
      • 1...Bxe4
        • 2.Qh4#
      • 1...Bd1
        • 2.Qh4#
      • 1...Bh1
        • 2.Qh4#
        • 2.Qf5#
        • 2.Qe6#
      • 1...Be2
        • 2.Qh4#
      • 1...Bg2
        • 2.Qh4#
        • 2.Qf5#
        • 2.Qe6#
      • 1...Bg4
        • 2.Sg5#
        • 2.Qh4#
        • 2.Qf1#
      • 1...h4
        • 2.Qxh4#
        • 2.Qxf3#
      • 1...Kg4!
  • Keys
    • 1.Qg7!
      • threat
        • 2.Qg3#
      • 1...Bg4
        • 2.Sg5#
      • 1...h4
        • 2.Sf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(a);SBLOCK::S(D)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • P(c);SBLOCK::S(D)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);XS(D)::QAR1(A)
        • B(a);::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • B(a);SBLOCK::S(D)
      • P(c);SBLOCK::S(D)
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