MESON Chess Problem Database

Problem Display
PID: 79938 (8/3Q4/5k1K/4p3/8/8/1BB1b3/8 w - - 0 1)

Auhagen, Ulrich Otto Ferdinand

Die Schwalbe, 1982

8/3Q4/5k1K/4p3/8/8/1BB1b3/8

#2

4 + 3

5454 Near Snap 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Ba3?
      • threat
        • 2.Qf5#
        • 2.Qe7#
      • 1...e4
        • 2.Bb2#
      • 1...Bg4
        • 2.Qe7#
      • 1...Bd3!
    • 1.Bb3?
      • threat
        • 2.Qe6#
        • 2.Qf7#
      • 1...Bg4
        • 2.Qf7#
      • 1...Bh5
        • 2.Qe6#
      • 1...Bc4!
    • 1.Bg6?
      • threat
        • 2.Qd6#
        • 2.Qf7#
      • 1...Bg4
        • 2.Qf7#
      • 1...Bc4!
  • Keys
    • 1.Bc1!
      • threat
        • 2.Bg5#
      • 1...e4
        • 2.Bb2#

This anticipates 228670(2020)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(A);N_PINP(b)
      • Threat
        • DUALS(2)
      • Vars
        • P(b);OGATEB::B(A)
        • B(a);::QAB1(D)
      • Refutation
        • B(a);
    • Try
      • B(B);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::QAR1(D)
      • Refutation
        • B(a);
    • Try
      • B(B);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::QAR1(D)
      • Refutation
        • B(a);
  • Actual
    • B(A);N_PINP(b)
    • Threat
      • B(A)
    • Vars
      • P(b);OGATEB::B(A)
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