MESON Chess Problem Database

Problem Display
PID: 234741 (4k1Kn/2Q1b2N/8/5P2/8/8/8/8 w - - 0 1)

Lincoln, Robert A

Kudesnik, 2013

4k1Kn/2Q1b2N/8/5P2/8/8/8/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ba3
      • 2.Sf6#
    • 1...Bb4
      • 2.Sf6#
    • 1...Bc5
      • 2.Sf6#
    • 1...Bd6
      • 2.Sf6#
    • 1...Bf6
      • 2.Sxf6#
    • 1...Bf8
      • 2.Sf6#
  • Keys
    • 1.f6!
      • threat
        • 2.Qxe7#
      • 1...Bxf6
        • 2.Sxf6#
      • 1...Ba3
        • 2.Qc8#
      • 1...Bb4
        • 2.Qc8#
      • 1...Bc5
        • 2.Qc8#
      • 1...Bd6
        • 2.Qc8#
      • 1...Bd8
        • 2.Qc6#
      • 1...Bf8
        • 2.Qc8#
      • 1...Sg6
        • 2.f7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 5
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::S(C)
    • B(a);N_GUARD::S(C),XB(a)
  • Actual
    • P(A);
    • Threat
      • QAR1(B),XB(a)
    • Vars
      • B(a);XP(A)::S(C),XB(a)
      • B(a);N_GUARD::QAR2(B)
      • B(a);SBLOCK::QAB(B)
      • S(c);N_GUARD::P(A)
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