MESON Chess Problem Database

Problem Display
PID: 242948 (1Q6/r1Pr4/2BNp3/4k2N/1P6/p1K2P2/8/8 w - - 0 1)

Gold, Samuel

English Mechanic and World of Science, 1881

(First published on Fri Aug 26 1881)

1Q6/r1Pr4/2BNp3/4k2N/1P6/p1K2P2/8/8

#2

8 + 5

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sf7+?
      • 1...Kf5
        • 2.Be4#
      • 1...Rxf7!
    • 1.Qf8?
      • threat
        • 2.Sc4#
        • 2.Qf4#
        • 2.f4#
      • 1...Rxd6
        • 2.Qf4#
        • 2.Qf6#
        • 2.f4#
      • 1...Re7
        • 2.Sc4#
        • 2.Qf4#
      • 1...Rf7!
    • 1.c8S?
      • threat
        • 2.Qb5#
        • 2.f4#
      • 1...Rf7
        • 2.Qb5#
      • 1...Ra5
        • 2.f4#
      • 1...Rab7
        • 2.f4#
      • 1...Rdb7
        • 2.f4#
      • 1...Rxd6!
  • Keys
    • 1.Be4!
      • threat
        • 2.Sc4#
      • 1...Kxd6
        • 2.c8S#
      • 1...Rxd6
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(b);P-FLIGHT::B(E)
      • Refutation
        • R(e);XS(F)
    • Try
      • Q(H);
      • Threat
        • DUALS(3)
      • Refutation
        • R(e);
    • Try
      • P(G);
      • Threat
        • DUALS(2)
      • Vars
        • R(e);::QAR(H)
        • R(d);::P(B)
        • R(e);::P(B)
      • Refutation
        • R(e);P_SPINR(e),XS(F)
  • Actual
    • B(E);
    • Threat
      • S(F)
    • Vars
      • K(b);S_FLIGHT,XS(F)::P=S
      • R(e);N_GUARD,SBLOCK,XS(F)::QAB(H)
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