MESON Chess Problem Database

Problem Display
PID: 222802 (2nRBN1n/3P3Q/6R1/3k4/bP3bK1/1p2p1P1/1B6/8 w - - 0 1)

Wainwright, Joseph CJ

HM., St. John Globe, 1884

2nRBN1n/3P3Q/6R1/3k4/bP3bK1/1p2p1P1/1B6/8

#2

10 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qg8+?
      • 1...Ke4
        • 2.Qc4#
      • 1...Sf7!
    • 1.Qf7+?
      • 1...Ke4
        • 2.Qc4#
        • 2.Qf5#
      • 1...Sxf7!
    • 1.dxc8Q+?
      • 1...Ke4
        • 2.Re6#
        • 2.Qf5#
        • 2.Qh1#
        • 2.Qc4#
      • 1...Bd6
        • 2.Rg5#
        • 2.Rgxd6#
        • 2.Qe6#
        • 2.Qh1#
      • 1...Bd7+!
    • 1.dxc8R+?
      • 1...Ke4
        • 2.Re6#
        • 2.Rc4#
        • 2.Qh1#
      • 1...Bd6
        • 2.Rg5#
        • 2.Rgxd6#
        • 2.Qh1#
      • 1...Bd7+!
  • Keys
    • 1.Rc6!
      • threat
        • 2.Qh1#
      • 1...Kxc6
        • 2.dxc8S#
      • 1...Bxc6
        • 2.Qd3#
      • 1...Bh6
        • 2.dxc8Q#
        • 2.dxc8S#
        • 2.dxc8B#
        • 2.dxc8R#
      • 1...Sd6
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • K(e);OGATE,S_FLIGHT::QAR2(G)
      • Refutation
        • S(g);P_SPINS(g)
    • Try
      • Q(G);CHECK
      • Refutation
        • S(g);XQ(G)
    • Try
      • P(F);CHECK,XS(f)
      • Refutation
        • B(c);CHECK,P_SPINB(c)
    • Try
      • P(F);CHECK,XS(f)
      • Refutation
        • B(c);CHECK,P_SPINB(c)
  • Actual
    • R(E);
    • Threat
      • QAB(G)
    • Vars
      • K(e);S_FLIGHT,XR(E)::PXS(f)=S
      • B(c);SBLOCK,XR(E)::QAR2(G)
      • S(f);SBLOCK::R1(E)
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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).