MESON Chess Problem Database

Problem Display
PID: 2014 (8/2K5/8/2k5/2b5/2B5/2Q2n2/8 w - - 0 1)

Anonymous

Winona Republican, 1858

8/2K5/8/2k5/2b5/2B5/2Q2n2/8

#2

3 + 3

1679 American Chess Nuts 1868
5454 Near Snap 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qf5#
  • Tries
    • 1.Qe4?
      • threat
        • 2.Qc6#
      • 1...Kb5
        • 2.Qc6#
      • 1...Bb5
        • 2.Bb4#
        • 2.Qd4#
      • 1...Bd5
        • 2.Qb4#
      • 1...Sxe4!
    • 1.Qxf2+?
      • 1...Kd5
        • 2.Qf5#
      • 1...Kb5!
  • Keys
    • 1.Qa4!
      • threat
        • 2.Qc6#
      • 1...Kd5
        • 2.Qc6#
      • 1...Bb5
        • 2.Qd4#
      • 1...Bd5
        • 2.Bd4#
        • 2.Qb4#

This anticipates 178748(1955)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);P-FLIGHT::QAR2(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(c);P-FLIGHT::QAB1(A)
        • B(b);OGATE,SBLOCK::QAB1(A)
      • Refutation
        • S(a);XQ(A)
    • Try
      • Q(A);CHECK,XS(a)
      • Vars
        • K(c);P-FLIGHT::QAR2(A)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • K(c);P-FLIGHT::QAB1(A)
      • B(b);OGATE,SBLOCK::QAB1(A)
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