MESON Chess Problem Database

Problem Display
PID: 101277 (1BB4K/rr1P4/1p2kn1R/q2nN3/1pP1Qp1b/2p1p3/6p1/3b4 w - - 0 1)

Wainwright, Joseph CJ

Good Companions, 1920

1BB4K/rr1P4/1p2kn1R/q2nN3/1pP1Qp1b/2p1p3/6p1/3b4

#2

8 + 14

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sc7
      • 2.d8Q#
    • 1...Se7
      • 2.d8S#
  • Tries
    • 1.Sg6+?
      • 1...Kf7
        • 2.d8S#
      • 1...Sxe4!
  • Keys
    • 1.Kg7!
      • threat
        • 2.Sd3#
        • 2.Sf3#
        • 2.Sg4#
        • 2.Sc6#
        • 2.Sf7#
      • 1...Rxd7+
        • 2.Sxd7#
        • 2.Sf7#
      • 1...g1Q+
        • 2.Sg4#
      • 1...g1R+
        • 2.Sg4#
      • 1...Ke7
        • 2.Sc6#
      • 1...Rxb8
        • 2.Sf7#
      • 1...Rc7
        • 2.Sf7#
      • 1...Sc7
        • 2.d8Q#
      • 1...Bc2
        • 2.Sd3#
      • 1...Bf3
        • 2.Sxf3#
      • 1...Bg4
        • 2.Sd3#
        • 2.Sf3#
        • 2.Sxg4#
        • 2.Sc6#
        • 2.Sf7#
      • 1...Se7
        • 2.d8S#
      • 1...f3
        • 2.Sd3#
        • 2.Sxf3#
        • 2.Sg4#
        • 2.Sc6#
        • 2.Sf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(i);S_CUTR(n)::P=Q
    • S(i);SBLOCK::P=S
  • Tries
    • Try
      • S(C);CHECK,N_PINS(l)
      • Vars
        • K(k);S_FLIGHT::P=S
      • Refutation
        • S(l);XQ(B)
  • Actual
    • K(H);P_SPINP(E),S_FLIGHT
    • Threat
      • DUALS(5)
    • Vars
      • P(b);CHECK::QAR(B)+S(C)
      • K(k);N_PINP(E),N_SPINS(l),P-FLIGHT::QAR(B)+S(C),DCHECK
      • R(n);XB(F)::QAR(B)+S(C)
      • R(n);::QAR(B)+S(C)
      • S(i);N_PINP(E)::P=Q
      • B(a);::QAR(B)+S(C)
      • B(a);::QAR(B)+S(C),XB(a)
      • S(i);N_PINP(E),SBLOCK::P=S
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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).