MESON Chess Problem Database

Problem Display
PID: 144158 (1n5n/bp6/qp3p2/Nk2pQ2/p2p2p1/B2N3b/4K1P1/8 w - - 0 1)

Davis, Henry Hosey

Bristol Mercury, 1888

1n5n/bp6/qp3p2/Nk2pQ2/p2p2p1/B2N3b/4K1P1/8

#2

6 + 13

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Tries
    • 1.Qd7+?
      • 1...Kxa5
        • 2.Bb4#
      • 1...Sc6
        • 2.Qd5#
      • 1...Sxd7!
  • Keys
    • 1.Sxe5!
      • threat
        • 2.Sd3#
        • 2.Sf3#
        • 2.Sec4#
        • 2.Sxg4#
        • 2.Sec6#
        • 2.Sg6#
        • 2.Sd7#
        • 2.Sf7#
      • 1...Kxa5+
        • 2.Sc4#
      • 1...d3+
        • 2.Sxd3#
      • 1...Qxa5
        • 2.Qd3#
      • 1...Bxg2
        • 2.Sf3#
      • 1...bxa5
        • 2.Qb1#
      • 1...fxe5
        • 2.Qxe5#
      • 1...Sc6
        • 2.Sexc6#
      • 1...Sd7
        • 2.Sxd7#
      • 1...Sg6
        • 2.Sxg6#
      • 1...Sf7
        • 2.Sxf7#
      • 1...g3
        • 2.Sg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(F);CHECK,N_PINP(f)
      • Vars
        • K(e);P-FLIGHT,P_PINS(D),XS(E)::B(C)
        • S(l);P_SPINS(l)::QAR2(F)
      • Refutation
        • S(l);XQ(F)
  • Actual
    • S(D);XP(f)
    • Threat
      • DUALS(8)
    • Vars
      • K(e);CHECK,P-FLIGHT,XS(E)::QAR(F)+S(D),DCHECK
      • P(c);CHECK::QAR(F)+S(D),XP(c)
      • Q(g);SBLOCK,XS(E)::QAB(F)
      • B(a);XP(B)::QAR(F)+S(D)
      • P(h);SBLOCK,XS(E)::QAR(F)
      • P(i);OGATE,P_SPINP(i),XS(D)::QAR(F),XP(i)
      • S(l);::QAR(F)+S(D),XS(l)
      • S(m);::QAR(F)+S(D),XS(m)
      • P(d);::QAR(F)+S(D)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).