MESON Chess Problem Database

Problem Display
PID: 270440 (n2N1K2/2pp4/3P1Q2/B1kp2p1/2P3P1/1P6/8/8 w - - 0 1)

Westbury, Eric Ernest

Source?, 1899

n2N1K2/2pp4/3P1Q2/B1kp2p1/2P3P1/1P6/8/8

#2

8 + 6

17417 Westbury Scrapbooks 2023

SOLUTION

  • SOUND
  • Sets
    • 1...dxc4
      • 2.Qe5#
    • 1...d4
      • 2.Qe5#
    • 1...c6
      • 2.Sb7#
  • Tries
    • 1.Qd4+?
      • 1...Kxd6
        • 2.Qxd5#
        • 2.c5#
      • 1...Kxd4!
    • 1.Qe5?
      • threat
        • 2.Qxd5#
      • 1...c6
        • 2.Sb7#
      • 1...Sb6!
    • 1.Qf4?
      • threat
        • 2.b4#
      • 1...dxc4
        • 2.Qe5#
      • 1...d4
        • 2.Qe5#
      • 1...gxf4!
  • Keys
    • 1.Qc3!
      • 1...Kxd6
        • 2.c5#
      • 1...dxc4
        • 2.Qe5#
      • 1...cxd6
        • 2.b4#
      • 1...Sb6
        • 2.Bb4#
      • 1...d4
        • 2.Qb4#
      • 1...c6
        • 2.Sb7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATEB,XP(B)::QAR2(F)
    • P(b);OGATEB::QAR2(F)
    • P(d);SBLOCK::S(G)
  • Tries
    • Try
      • Q(F);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(F)
    • Try
      • Q(F);P_PINP(b)
      • Threat
        • QAR1(F),XP(b)
      • Vars
        • P(d);SBLOCK::S(G)
      • Refutation
        • S(f);
    • Try
      • Q(F);
      • Threat
        • P(A)
      • Vars
        • P(b);OGATEB,XP(B)::QAR2(F)
        • P(b);OGATEB::QAR2(F)
      • Refutation
        • P(c);XQ(F)
  • Actual
    • Q(F);
    • Vars
      • K(a);OGATE,S_FLIGHT,XP(E)::P(B)
      • P(b);OGATEB,P_SPINP(b),XP(B)::QAR2(F)
      • P(d);SBLOCK,XP(E)::P(A)
      • S(f);SBLOCK::B(D)
      • P(b);SBLOCK::QAB1(F)
      • P(d);SBLOCK::S(G)
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