MESON Chess Problem Database

Problem Display
PID: 148579 (n7/1K1p2p1/3P4/1p1kp3/1PN3Q1/2p5/2N1P3/5n2 w - - 0 1)

Keeble, John Frederick

1st Prize, Eastern Daily Press, 1900

n7/1K1p2p1/3P4/1p1kp3/1PN3Q1/2p5/2N1P3/5n2

#2

7 + 8

15 British Chess Magazine 1901

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2
      • 2.S2e3#
    • 1...Sh2
      • 2.S2e3#
    • 1...Se3
      • 2.S2xe3#
    • 1...Sg3
      • 2.S2e3#
  • Tries
    • 1.Sb6+?
      • 1...Kxd6
        • 2.Qxd7#
      • 1...Sxb6!
    • 1.Qf3+?
      • 1...Kxc4
        • 2.Qf7#
      • 1...e4
        • 2.Qf7#
      • 1...Ke6!
  • Keys
    • 1.Qg6!
      • 1...Kxc4
        • 2.Qf7#
      • 1...bxc4
        • 2.e4#
      • 1...Sd2
        • 2.S4e3#
      • 1...Sh2
        • 2.S4e3#
      • 1...Se3
        • 2.S4xe3#
      • 1...Sg3
        • 2.S4e3#
      • 1...Sb6
        • 2.Sxb6#
      • 1...Sc7
        • 2.Sb6#
      • 1...e4
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 4
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::S(A)
    • S(a);N_GUARD::S(A),XS(a)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(d);P-FLIGHT,XP(F)::QAR1(E),XP(f)
      • Refutation
        • S(h);XS(D)
    • Try
      • Q(E);CHECK
      • Vars
        • K(d);S_FLIGHT,XS(D)::QAB(E)
        • P(e);P_SPINP(e),SBLOCK::QAB(E)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • Q(E);
    • Vars
      • K(d);S_FLIGHT,XS(D)::QAB(E)
      • P(c);SBLOCK,XS(D)::P(B)
      • S(a);N_GUARD::S(D)
      • S(a);N_GUARD::S(D),XS(a)
      • S(h);N_GUARD::S(D),XS(h)
      • S(h);N_GUARD::S(D)
      • P(e);SBLOCK::QAB(E)
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