MESON Chess Problem Database

Problem Display
PID: 183152 (1BbQ4/b7/5n2/1BPpP3/3k4/2R1Rp1p/2p1p3/2q1N1nK w - - 0 1)

Wynne, Frank Wilson

4th Prize Set, Norwich Mercury, 1907

1BbQ4/b7/5n2/1BPpP3/3k4/2R1Rp1p/2p1p3/2q1N1nK

#2

9 + 11

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qa3
      • 2.Sxc2#
    • 1...Qxe3
      • 2.Rc4#
    • 1...Qa1
      • 2.Sxc2#
    • 1...Bxc5
      • 2.Rcd3#
    • 1...Se4
      • 2.Red3#
    • 1...Sd7
      • 2.Qh4#
  • Tries
    • 1.Qxf6?
      • threat
        • 2.Qf4#
        • 2.e6#
      • 1...Bxb8
        • 2.Qf4#
      • 1...Bf5
        • 2.e6#
      • 1...Be6
        • 2.Qf4#
      • 1...Qxe3!
    • 1.exf6?
      • threat
        • 2.Be5#
      • 1...Qxe3
        • 2.Rc4#
      • 1...Bxb8!
  • Keys
    • 1.c6!
      • threat
        • 2.Bxa7#
      • 1...Qxe3
        • 2.Rc4#
      • 1...Bxb8
        • 2.Qb6#
      • 1...Qa3
        • 2.Sxc2#
      • 1...Qa1
        • 2.Sxc2#
      • 1...Bc5
        • 2.Rcd3#
      • 1...Bb6
        • 2.Qxb6#
      • 1...Se4
        • 2.Red3#
      • 1...Sd7
        • 2.Qh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(a);N_GUARD::S(A),XP(c)
    • Q(a);SBLOCK,XR(D)::R1(C)
    • B(j);SBLOCK,XP(F)::R1(C)
    • S(i);SBLOCK::R1(D)
    • S(i);N_SPINP(h),OGATE::QAR(I)
  • Tries
    • Try
      • Q(I);N_PINP(h),XS(i)
      • Threat
        • DUALS(2)
      • Vars
        • B(j);XB(H)::QAR2(I)
        • B(k);::QAB(I)+P(G)
        • B(k);::QAR2(I)
      • Refutation
        • Q(a);XR(D)
    • Try
      • P(G);XS(i)
      • Threat
        • B(H)
      • Vars
        • Q(a);SBLOCK,XR(D)::R1(C)
      • Refutation
        • B(j);XB(H)
  • Actual
    • P(F);
    • Threat
      • B(H),XB(j)
    • Vars
      • Q(a);SBLOCK,XR(D)::R1(C)
      • B(j);N_GUARD,XB(H)::QAB(I)
      • Q(a);N_GUARD::S(A),XP(c)
      • B(j);SBLOCK::R1(C)
      • B(j);N_GUARD::QAB(I),XB(j)
      • S(i);SBLOCK::R1(D)
      • S(i);N_SPINP(h),OGATE::QAR(I)
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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).