MESON Chess Problem Database

Problem Display
PID: 149016 (8/K1prpp2/2Q5/p4p1q/r2k1N2/4R3/3P4/bnBR1n2 w - - 0 1)

Pape, Edouard

Good Companions (May), 1918

8/K1prpp2/2Q5/p4p1q/r2k1N2/4R3/3P4/bnBR1n2

#2

7 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Qe2
      • 2.Sxe2#
    • 1...Qg6
      • 2.Se2#
    • 1...Qh1
      • 2.Se2#
    • 1...Qh3
      • 2.Se2#
    • 1...Qh4
      • 2.Se2#
    • 1...Qg5
      • 2.Se2#
    • 1...Qh6
      • 2.Se2#
    • 1...Qh7
      • 2.Se2#
    • 1...Qh8
      • 2.Se2#
    • 1...Rd5
      • 2.Qxd5#
    • 1...Bc3
      • 2.dxc3#
    • 1...Sc3
      • 2.dxc3#
    • 1...e5
      • 2.Rd3#
    • 1...f6
      • 2.Se6#
  • Tries
    • 1.Bb2+?
      • 1...Sc3
        • 2.Qxc3#
      • 1...Bxb2!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Qc5#
      • 1...Sxe3
        • 2.dxe3#
      • 1...Rc4
        • 2.Qxd7#
      • 1...Rd5
        • 2.Qxa4#
      • 1...f4
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 13
  • Sets
    • Q(h);N_GUARD::S(E),XQ(h)
    • Q(h);N_GUARD::S(E)
    • R(j);N_GUARD::QAR1(F),XR(j)
    • B(a);OGATE::R(B)+P(C)DCHECK,XB(a)
    • S(b);OGATE::R(B)+P(C)DCHECK,XS(b)
    • P(k);SBLOCK::R1(D)
    • P(l);N_GUARD::S(E)
  • Tries
    • Try
      • B(A);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAB1(F),XS(b)
      • Refutation
        • B(a);XB(A)
  • Actual
    • S(E);
    • Threat
      • QAB1(F)
    • Vars
      • S(c);OGATE,XR(D)::P(C),XS(c)
      • R(d);SBLOCK::QAR(F),XR(j)
      • R(j);SBLOCK::QAR(F),XR(d)
      • P(g);N_GUARD::QAR1(F)
HTML5 logo

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).