MESON Chess Problem Database

Problem Display
PID: 272098 (2Q3bq/8/rPNP3p/3k4/B2N2P1/B3nP1K/1p6/8 w - - 0 1)

Westbury, Eric Ernest

Reading Observer, 1907

2Q3bq/8/rPNP3p/3k4/B2N2P1/B3nP1K/1p6/8

#2

10 + 7

17417 Westbury Scrapbooks 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd4
      • 2.Qxg8#
    • 1...Be6
      • 2.Qxe6#
    • 1...Bh7
      • 2.Qe6#
    • 1...Sd1
      • 2.Bb3#
    • 1...Sf1
      • 2.Bb3#
    • 1...Sc2
      • 2.Bb3#
    • 1...Sg2
      • 2.Bb3#
    • 1...Sxg4
      • 2.Bb3#
    • 1...Sf5
      • 2.Bb3#
  • Tries
    • 1.Sb4+?
      • 1...Kxd4
        • 2.Bxb2#
      • 1...Kxd6
        • 2.Qc7#
      • 1...Ke5!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Sxe3#
      • 1...Kc4
        • 2.Sb4#
      • 1...Sxg4
        • 2.Bb3#
      • 1...Sxf5
        • 2.Bb3#
      • 1...Qc3
        • 2.Qxg8#
      • 1...Qd4
        • 2.Qxg8#
      • 1...Qe5
        • 2.Sb4#
      • 1...Sd1
        • 2.Bb3#
      • 1...Sf1
        • 2.Bb3#
      • 1...Sc2
        • 2.Bb3#
      • 1...Sg2
        • 2.Bb3#
      • 1...Sc4
        • 2.Sfe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • Q(g);N_GUARD,XS(E)::QAB(J),XB(f)
    • B(f);N_GUARD,P_PINP(F)::QAB1(J),XB(f)
    • B(f);N_GUARD::QAB1(J)
    • S(b);N_GUARD::B(D)
    • S(b);N_GUARD,XP(F)::B(D)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • K(c);N_GUARD,P-FLIGHT,XS(E)::B(A),XP(a)
        • K(c);N_GUARD,P-FLIGHT,XP(I)::QAB1(J)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • S(E);
    • Threat
      • S(E),XS(b)
    • Vars
      • K(c);N_GUARD,S_FLIGHT::QAR(J)+S(H)
      • S(b);N_GUARD,XP(F)::B(D)
      • S(b);N_GUARD,XS(E)::B(D)
      • Q(g);N_GUARD::QAB(J),XB(f)
      • Q(g);SBLOCK::S(H)
      • S(b);N_GUARD::B(D)
      • S(b);SBLOCK::S(E)
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