MESON Chess Problem Database

Problem Display
PID: 23115 (8/5Kn1/3b4/5k2/7Q/3N2P1/8/8 w - - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

8/5Kn1/3b4/5k2/7Q/3N2P1/8/8

#2

4 + 3

5454 Near Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Ba3
      • 2.Qf4#
    • 1...Bb4
      • 2.Qf4#
    • 1...Bf4
      • 2.Qxf4#
    • 1...Bc5
      • 2.Qf4#
    • 1...Be7
      • 2.Qf4#
    • 1...Bf8
      • 2.Qf4#
  • Tries
    • 1.Qe4+?
      • 1...Kg5
        • 2.Qg6#
      • 1...Kxe4!
    • 1.Qh7+?
      • 1...Kg5
        • 2.Qg6#
      • 1...Kg4!
  • Keys
    • 1.Sf2!
      • threat
        • 2.Qf6#
      • 1...Ke5
        • 2.Qe4#
      • 1...Be5
        • 2.Qg4#
      • 1...Be7
        • 2.Qf4#
      • 1...Sh5
        • 2.Qxh5#
      • 1...Se8
        • 2.Qh5#

This anticipates 48081(2002)

FEATURES

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