MESON Chess Problem Database

Problem Display
PID: 162791 (4k3/8/1n1QP1Kb/8/8/8/8/4B3 w - - 0 1)

Lincoln, Robert A

Die Schwalbe, 2016

4k3/8/1n1QP1Kb/8/8/8/8/4B3

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Bh4?
      • threat
        • 2.Qe7#
        • 2.Qd8#
      • 1...Bf8
        • 2.Qd8#
      • 1...Sd5
        • 2.Qb8#
        • 2.Qd8#
      • 1...Sd7
        • 2.Qe7#
        • 2.exd7#
      • 1...Sc8
        • 2.Qd8#
      • 1...Bg5!
    • 1.Qd7+?
      • 1...Kf8
        • 2.Qf7#
        • 2.Qd8#
      • 1...Sxd7!
  • Keys
    • 1.Bb4!
      • threat
        • 2.Qe7#
      • 1...Bg5
        • 2.Qf8#
      • 1...Bf8
        • 2.Qxf8#
      • 1...Sd5
        • 2.Qb8#
        • 2.Qd7#
      • 1...Sc8
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(b);SBLOCK::QAR1(B)
        • S(a);::QAR1(B)
      • Refutation
        • B(b);
    • Try
      • Q(B);CHECK
      • Refutation
        • S(a);XQ(B)
  • Actual
    • B(A);
    • Threat
      • QAR1(B)
    • Vars
      • B(b);N_GUARD::QAR1(B)
      • B(b);N_GUARD::QAR1(B),XB(b)
      • S(a);N_GUARD::QAB1(B)
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