MESON Chess Problem Database

Problem Display
PID: 258379 (4bQ2/8/3NPN2/2pp2p1/3k1r1B/1P3p1R/3K4/8 w - - 0 1)

Nield, Joshua

English Mechanic and World of Science, 1892

(First published on Fri Jan 1 1892)

4bQ2/8/3NPN2/2pp2p1/3k1r1B/1P3p1R/3K4/8

#2

8 + 7

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf6
      • 2.Qxf6#
  • Tries
    • 1.Sd7?
      • threat
        • 2.Bf2#
      • 1...Rxh4
        • 2.Qg7#
        • 2.Qf6#
      • 1...gxh4
        • 2.Qxf4#
      • 1...Re4
        • 2.Sb5#
        • 2.Sf5#
      • 1...f2
        • 2.Rd3#
      • 1...Bxd7!
  • Keys
    • 1.Sg4!
      • threat
        • 2.Bf2#
      • 1...Rxg4
        • 2.Qg7#
        • 2.Qf6#
        • 2.Qh8#
      • 1...gxh4
        • 2.Qxf4#
      • 1...Re4
        • 2.Sf5#
      • 1...f2
        • 2.Rd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(c);OGATE,XS(G)::QAB(H),XR(c)
  • Tries
    • Try
      • S(G);
      • Threat
        • B(D)
      • Vars
        • P(f);N_GUARD,XB(D)::QAR2(H),XR(c)
        • P(a);OGATE::R1(C)
      • Refutation
        • B(g);XS(G)
  • Actual
    • S(G);
    • Threat
      • B(D)
    • Vars
      • P(f);N_GUARD,XB(D)::QAR2(H),XR(c)
      • R(c);N_GUARD,SBLOCK::S(E)
      • P(a);OGATE::R1(C)
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