MESON Chess Problem Database

Problem Display
PID: 23081 (1Q1n4/3k4/3N1K2/2p5/2B5/8/8/8 w - - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

1Q1n4/3k4/3N1K2/2p5/2B5/8/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Sc6
      • 2.Be6#
    • 1...Se6
      • 2.Bb5#
    • 1...Sb7
      • 2.Bb5#
    • 1...Sf7
      • 2.Bb5#
  • Tries
    • 1.Sb7?
      • 1...Ke8
        • 2.Qxd8#
      • 1...Sxb7
        • 2.Bb5#
      • 1...Sc6
        • 2.Sxc5#
        • 2.Be6#
      • 1...Se6
        • 2.Bb5#
      • 1...Sf7
        • 2.Bb5#
      • 1...Kc6!
    • 1.Se8?
      • 1...Kc6
        • 2.Qc7#
        • 2.Qb5#
      • 1...Sc6
        • 2.Be6#
      • 1...Se6
        • 2.Bb5#
      • 1...Sb7
        • 2.Bb5#
      • 1...Sf7
        • 2.Bb5#
      • 1...Kxe8!
    • 1.Qb6?
      • 1...Se6
        • 2.Bb5#
        • 2.Bxe6#
      • 1...Sb7
        • 2.Bb5#
        • 2.Be6#
      • 1...Sf7
        • 2.Bb5#
        • 2.Be6#
      • 1...Sc6!
  • Keys
    • 1.Sf7!
      • 1...Kc6
        • 2.Se5#
      • 1...Ke8
        • 2.Qxd8#
      • 1...Sxf7
        • 2.Bb5#
      • 1...Sc6
        • 2.Be6#
      • 1...Se6
        • 2.Se5#
        • 2.Bb5#
      • 1...Sb7
        • 2.Se5#
        • 2.Bb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • S(c);N_GUARD,SBLOCK::B(A)
    • S(c);N_GUARD::B(A)
  • Tries
    • Try
      • S(B);
      • Vars
        • K(b);P_SPINS(c),S_FLIGHT::QAR1(D),XS(c)
        • S(c);N_GUARD,XS(B)::B(A)
        • S(c);N_GUARD::B(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(B);
      • Vars
        • S(c);N_GUARD,SBLOCK::B(A)
        • S(c);N_GUARD::B(A)
      • Refutation
        • K(b);P_SPINS(c),S_FLIGHT,XS(B)
    • Try
      • Q(D);
      • Refutation
        • S(c);
  • Actual
    • S(B);
    • Vars
      • K(b);S_FLIGHT::S(B)
      • K(b);P_SPINS(c),S_FLIGHT::QAR1(D),XS(c)
      • S(c);N_GUARD,XS(B)::B(A)
      • S(c);N_GUARD,SBLOCK::B(A)
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