MESON Chess Problem Database

Problem Display
PID: 40289 (1K5Q/2RBRP2/1p3p2/1N1k4/3b4/1P1p4/1p3p2/2r1r3 w - - 0 1)

Pape, Edouard

L'Eclaireur du Soir, 1922

1K5Q/2RBRP2/1p3p2/1N1k4/3b4/1P1p4/1p3p2/2r1r3

#2

8 + 9

3360 Simple Two-move Themes 1924

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.bxc4#
    • 1...Bc5
      • 2.Bc6#
    • 1...f5
      • 2.Qxd4#
  • Tries
    • 1.Qh1+?
      • 1...Re4
        • 2.Qxe4#
      • 1...Rxh1!
  • Keys
    • 1.Qh4!
      • threat
        • 2.Qxd4#
      • 1...Rc4
        • 2.bxc4#
      • 1...Re4
        • 2.Qxe4#
      • 1...Bc3
        • 2.Qc4#
      • 1...Be3
        • 2.Qe4#
      • 1...Bc5
        • 2.Bc6#
      • 1...Be5
        • 2.Be6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(a);OGATE::P(A),XR(a)
    • B(f);SBLOCK,S_CUTR(a)::B(D)
    • P(i);OGATE::QAR1(H),XB(f)
  • Tries
    • Try
      • Q(H);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAB1(H),XR(b)
      • Refutation
        • R(b);XQ(H)
  • Actual
    • Q(H);
    • Threat
      • QAR1(H),XB(f)
    • Vars
      • R(a);OGATE::P(A),XR(a)
      • R(b);N_GUARD::QAB1(H),XR(b)
      • B(f);OGATE::QAB1(H)
      • B(f);S_CUTR(b)::QAB1(H)
      • B(f);SBLOCK,S_CUTR(a)::B(D)
      • B(f);P_PINR(C),SBLOCK,S_CUTR(b)::B(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).