MESON Chess Problem Database

Problem Display
PID: 143586 (3n4/1n5Q/8/b2k2P1/4R3/1N4Bb/8/1K3B2 w - - 0 1)

Doyle, Hugh

Newcastle Weekly Chronicle Supplement, 1890

(First published on Sat Nov 1 1890)

3n4/1n5Q/8/b2k2P1/4R3/1N4Bb/8/1K3B2

#2

7 + 5

574 Manchester Weekly Times 1891
15 British Chess Magazine 1896
15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sc6
      • 2.Bc4#
    • 1...Se6
      • 2.Qxb7#
  • Tries
    • 1.Rd4+?
      • 1...Ke6
        • 2.Bxh3#
        • 2.Bc4#
        • 2.Qd7#
      • 1...Kc6!
    • 1.Qf5+?
      • 1...Kc6
        • 2.Qb5#
      • 1...Bxf5!
    • 1.Qd7+?
      • 1...Kxe4
        • 2.Qd3#
      • 1...Sd6
        • 2.Rd4#
        • 2.Re5#
      • 1...Bxd7!
  • Keys
    • 1.Re6!
      • threat
        • 2.Qe4#
      • 1...Bf5+
        • 2.Qxf5#
      • 1...Kxe6
        • 2.Bc4#
      • 1...Bxe6
        • 2.Qh1#
      • 1...Sxe6
        • 2.Qxb7#
      • 1...Sd6
        • 2.Rxd6#
      • 1...Bg2
        • 2.Qf5#
      • 1...Sc5
        • 2.Rd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • S(e);SBLOCK::B(B)
    • S(e);N_GUARD::QAB(G),XS(d)
  • Tries
    • Try
      • R(E);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(G);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::QAB1(G)
      • Refutation
        • B(a);P_PINR(E),XQ(G)
    • Try
      • Q(G);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT,XR(E)::QAB1(G)
      • Refutation
        • B(a);XQ(G)
  • Actual
    • R(E);
    • Threat
      • QAB1(G)
    • Vars
      • B(a);CHECK,N_GUARD::QAR2(G),XB(a)
      • K(c);S_FLIGHT,XR(E)::B(B)
      • B(a);OGATE,SBLOCK,XR(E)::QAB(G)
      • S(e);N_GUARD,SBLOCK,XR(E)::QAB(G),XS(d)
      • S(d);N_GUARD::R1(E),XS(d)
      • B(a);N_GUARD::QAR2(G)
      • S(d);N_GUARD::R1(E)
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