MESON Chess Problem Database

Problem Display
PID: 157634 (8/8/4p3/4k2n/4N1PB/2KQ4/2n5/8 w - - 0 1)

Meyer, Max Julius

Dublin Evening Mail, 1889

(First published on Thu Jul 11 1889)

8/8/4p3/4k2n/4N1PB/2KQ4/2n5/8

#2

5 + 4

15351 SCPF/BCPS Black Books 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Sg3
      • 2.Bxg3#
    • 1...Sf4
      • 2.Bf6#
    • 1...Sf6
      • 2.Bg3#
    • 1...Sg7
      • 2.Bg3#
  • Tries
    • 1.Kxc2?
      • 1...Sg3
        • 2.Bxg3#
      • 1...Sf4
        • 2.Bf6#
      • 1...Sf6
        • 2.Bg3#
      • 1...Sg7
        • 2.Bg3#
      • 1...Kf4!
  • Keys
    • 1.Sf6!
      • 1...Kf4
        • 2.Qe4#
      • 1...Sxf6
        • 2.Bg3#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sg3
        • 2.Qxg3#
      • 1...Sa1
        • 2.Qd4#
      • 1...Se1
        • 2.Qd4#
      • 1...Sa3
        • 2.Qd4#
      • 1...Se3
        • 2.Qd4#
      • 1...Sb4
        • 2.Qd4#
      • 1...Sf4
        • 2.Sd7#
      • 1...Sg7
        • 2.Qg3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 3
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD::B(E),XS(c)
    • S(c);N_GUARD,SBLOCK::B(E)
    • S(c);N_GUARD::B(E)
  • Tries
    • Try
      • K(A);P-FLIGHT,XS(a)
      • Vars
        • S(c);N_GUARD::B(E),XS(c)
        • S(c);N_GUARD,SBLOCK::B(E)
        • S(c);N_GUARD::B(E)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(C);
    • Vars
      • K(b);S_FLIGHT::QAR1(B)
      • S(c);N_GUARD,SBLOCK,XS(C)::B(E)
      • S(a);N_GUARD::QAB1(B),XS(a)
      • S(c);N_GUARD::QAB(B),XS(c)
      • S(a);N_GUARD::QAB1(B)
      • S(c);SBLOCK::S(C)
      • S(c);N_GUARD::QAB(B)
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