MESON Chess Problem Database

Problem Display
PID: 271479 (8/5Q2/2RN4/3Nk3/2n2p1K/2P4b/5np1/8 w - - 0 1)

Westbury, Eric Ernest

Checkmate, 1903

8/5Q2/2RN4/3Nk3/2n2p1K/2P4b/5np1/8

#2

6 + 6

3713 Snap 2023
17417 Westbury Scrapbooks 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Bf5
      • 2.Qxf5#
    • 1...Se4
      • 2.Sxc4#
    • 1...Sg4
      • 2.Qf5#
  • Tries
    • 1.Qh5+?
      • 1...Bf5
        • 2.Qxf5#
      • 1...Ke6!
    • 1.Qg7+?
      • 1...Ke6
        • 2.Sxf4#
        • 2.Sc7#
      • 1...Kxd5!
  • Keys
    • 1.Rc5!
      • threat
        • 2.Qf6#
      • 1...Kxd6
        • 2.Qe7#
      • 1...Sxd6
        • 2.Sf6#
      • 1...Be6
        • 2.Qxf4#
      • 1...Se4
        • 2.Sxc4#
      • 1...Sg4
        • 2.Qe7#

This anticipates 102044(1991)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(c);N_GUARD::QAR1(F),XB(c)
    • S(a);SBLOCK::S(E),XS(d)
    • S(a);S_CUTB(c)::QAR1(F)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::QAR1(F),XB(c)
      • Refutation
        • K(f);P-FLIGHT
    • Try
      • Q(F);CHECK
      • Refutation
        • K(f);P-FLIGHT,XS(C)
  • Actual
    • R(D);
    • Threat
      • QAB1(F)
    • Vars
      • K(f);S_CUTB(c),S_FLIGHT,XS(E)::QAB1(F)
      • S(d);SBLOCK,XS(E)::R(D)+S(C)
      • B(c);SBLOCK::QAB1(F),XP(e)
      • S(a);SBLOCK::S(E),XS(d)
      • S(a);S_CUTB(c)::QAR2(F)
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