MESON Chess Problem Database

Problem Display
PID: 198210 (2K2R2/1n2p2p/1bRpkBp1/1N3rp1/6rq/4N2B/b4p2/7Q w - - 0 1)

Pape, Edouard

4th HM., Club Argentino de Ajedrez, 1920

2K2R2/1n2p2p/1bRpkBp1/1N3rp1/6rq/4N2B/b4p2/7Q

#2

8 + 13

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Qd5#
    • 1...Rc5
      • 2.Sd4#
    • 1...Rxf6
      • 2.Qe4#
    • 1...Bxe3
      • 2.Sc7#
    • 1...Bd4
      • 2.Sc7#
    • 1...Bc5
      • 2.Sc7#
    • 1...Ba7
      • 2.Sc7#
    • 1...Bc7
      • 2.Sxc7#
  • Tries
    • 1.Qe4+?
      • 1...Re5
        • 2.Qxe5#
      • 1...Rxe4!
  • Keys
    • 1.Rc7!
      • threat
        • 2.Rxe7#
      • 1...Rxf6
        • 2.Qe4#
      • 1...Bxc7
        • 2.Sxc7#
      • 1...exf6
        • 2.Re8#
      • 1...Rc4
        • 2.Qd5#
      • 1...Rc5
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • R(c);P_PINR(E),P_SPINR(e),S_CUTB(a)::QAB1(A)
    • R(e);P_PINR(E),P_SPINR(c),S_CUTB(g)::S(D)
    • R(e);N_GUARD,P_SPINR(c),XB(F)::QAR2(A)
    • B(g);N_GUARD,XS(B)::S(D)
    • B(g);N_GUARD::S(D)
    • B(g);N_GUARD::S(D),XB(g)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • R(e);N_GUARD,P_SPINR(c)::QAR1(A),XR(e)
      • Refutation
        • R(c);P_SPINR(e),XQ(A)
  • Actual
    • R(E);N_PINP(h)
    • Threat
      • R1(E),XP(l)
    • Vars
      • R(e);N_GUARD,P_SPINR(c),XB(F)::QAR2(A)
      • B(g);XR(E)::S(D),XB(g)
      • P(l);OGATEB,SBLOCK,XB(F)::R(H)
      • R(c);P_PINR(E),P_SPINR(e),S_CUTB(a)::QAB1(A)
      • R(e);P_PINR(E),P_SPINR(c),S_CUTB(g)::S(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).