MESON Chess Problem Database

Problem Display
PID: 185757 (1n4B1/2p1B2n/r3P3/1p1k1N2/pP4N1/4P3/2Q3b1/1K6 w - - 0 1)

Shire, David J

Problem Observer, 2016

1n4B1/2p1B2n/r3P3/1p1k1N2/pP4N1/4P3/2Q3b1/1K6

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rc6
      • 2.Qd3#
    • 1...Bf1
      • 2.e4#
    • 1...Bh3
      • 2.e4#
    • 1...c6
      • 2.Qd3#
  • Tries
    • 1.Sg3?
      • threat
        • 2.Qc5#
      • 1...c5
        • 2.Qxc5#
      • 1...Rc6
        • 2.Qd3#
      • 1...Be4
        • 2.Qxe4#
      • 1...Sd7!
    • 1.Bd6?
      • threat
        • 2.e7#
      • 1...Rxd6
        • 2.Se7#
      • 1...Sg5
        • 2.Sf6#
      • 1...Sf6
        • 2.Sxf6#
      • 1...Sf8
        • 2.Sf6#
      • 1...c5!
  • Keys
    • 1.Bc5!
      • threat
        • 2.Se7#
      • 1...Kc6
        • 2.Qxg2#
      • 1...Sc6
        • 2.e7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(e);SBLOCK::QAR2(B)
    • B(a);N_GUARD::P(C)
    • P(f);SBLOCK::QAR2(B)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAR1(B)
      • Vars
        • P(f);::QAR1(B),XP(f)
        • R(e);SBLOCK::QAR2(B)
        • B(a);N_GUARD,P_PINQ(B)::QAB1(B),XB(a)
      • Refutation
        • S(h);
    • Try
      • B(H);
      • Threat
        • B(I)+P(G)
      • Vars
        • R(e);SBLOCK,XB(H)::S(F)
        • S(g);N_GUARD::S(E)
        • S(g);N_GUARD::S(E),XS(g)
      • Refutation
        • P(f);
  • Actual
    • B(H);
    • Threat
      • S(F)
    • Vars
      • K(d);S_FLIGHT::QAB(B),XB(a)
      • S(h);SBLOCK,S_CUTR(e)::B(I)+P(G)
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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).