MESON Chess Problem Database

Problem Display
PID: 4779 (4K3/3Q4/8/p3k2N/r7/R2B4/5P2/7b w - - 0 1)

Heathcote, Godfrey

1st Prize, English Mechanic and World of Science, 1891

(First published on Fri Nov 7 1890)

4K3/3Q4/8/p3k2N/r7/R2B4/5P2/7b

#2

6 + 4

187 The Chess Bouquet 1897
5066 Classic Chess Problems by Pioneer Composers 1970
5658 Beispiele zur Ideengeschichte des Schachproblems (Josef Breuer) 1982
3310 2345 Chess Problems 1997
15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa3
      • 2.f4#
    • 1...Re4
      • 2.Rxa5#
    • 1...Be4
      • 2.f4#
  • Tries
    • 1.Ke7?
      • threat
        • 2.Qd6#
      • 1...Rd4
        • 2.Qf5#
        • 2.Qe6#
      • 1...Re4
        • 2.Rxa5#
      • 1...Be4
        • 2.f4#
      • 1...Bd5!
  • Keys
    • 1.Be4!
      • threat
        • 2.Qd5#
      • 1...Kxe4
        • 2.Re3#
      • 1...Rxe4
        • 2.Rxa5#
      • 1...Bxe4
        • 2.f4#
      • 1...Rd4
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(b);N_GUARD,XR(B)::P(A)
    • R(b);OGATE::R(B),XP(c)
    • B(a);S_CUTR(b)::P(A)
  • Tries
    • Try
      • K(F);P-FLIGHT
      • Threat
        • QAB1(E)
      • Vars
        • R(b);OGATE::R(B),XP(c)
        • B(a);S_CUTR(b)::P(A)
      • Refutation
        • B(a);
  • Actual
    • B(C);
    • Threat
      • QAR1(E)
    • Vars
      • K(d);OGATEB,P-FLIGHT,XB(C)::R1(B)
      • R(b);OGATE,SBLOCK,XB(C)::R(B),XP(c)
      • B(a);SBLOCK,XB(C)::P(A)
      • R(b);SBLOCK::QAR2(E)
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