MESON Chess Problem Database

Problem Display
PID: 258376 (3R4/8/8/K1p3Q1/2b1k3/1BP5/3Pp3/4b2N w - - 0 1)

Houghton, RW

English Mechanic and World of Science, 1891

(First published on Fri Dec 11 1891)

3R4/8/8/K1p3Q1/2b1k3/1BP5/3Pp3/4b2N

#2

7 + 5

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bd3
      • 2.Bd5#
  • Tries
    • 1.Rd4+?
      • 1...Kf3
        • 2.Rf4#
        • 2.Qg4#
      • 1...cxd4!
    • 1.Re8+?
      • 1...Kd3
        • 2.Qe3#
      • 1...Kf3
        • 2.Re3#
      • 1...Be6!
    • 1.Rf8?
      • threat
        • 2.Qf5#
      • 1...Kd3
        • 2.Qe3#
      • 1...Bxd2
        • 2.Sf2#
      • 1...Be6
        • 2.Bc2#
        • 2.Qe3#
      • 1...Bf7!
    • 1.d3+?
      • 1...Bxd3
        • 2.Bd5#
      • 1...Kf3!
  • Keys
    • 1.Rd3!
      • threat
        • 2.Re3#
      • 1...Kxd3
        • 2.Qe3#
      • 1...Bxd2
        • 2.Sf2#
      • 1...Bxd3
        • 2.Bd5#
      • 1...Bf2
        • 2.Sxf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(c);OGATE,SBLOCK::B(C)
  • Tries
    • Try
      • R(G);CHECK
      • Refutation
        • P(e);XR(G)
    • Try
      • R(G);CHECK
      • Vars
        • K(d);N_GUARD,S_FLIGHT::QAR1(F)
        • K(d);OGATE,S_FLIGHT::R1(G)
      • Refutation
        • B(c);P_SPINB(c)
    • Try
      • R(G);
      • Threat
        • QAB1(F)
      • Vars
        • K(d);N_GUARD,S_FLIGHT::QAR1(F)
        • B(a);N_GUARD,P_PINP(D),XP(B)::S(A)
      • Refutation
        • B(c);
    • Try
      • P(B);CHECK,P_SPINP(D)
      • Vars
        • B(c);OGATE,SBLOCK,XP(B)::B(C)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • R(G);
    • Threat
      • R1(G)
    • Vars
      • K(d);N_GUARD,S_FLIGHT,XR(G)::QAR1(F)
      • B(a);N_GUARD,P_PINP(D),XP(B)::S(A)
      • B(c);OGATE,SBLOCK,XR(G)::B(C)
      • B(a);N_GUARD::S(A),XB(a)
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