MESON Chess Problem Database

Problem Display
PID: 232146 (1r1nQ3/4pp2/1p1R1R2/4p3/1pP1k1Pp/1K2p3/4N3/4N3 w - - 0 1)

Groeneveld, Cornelis

Zadachi i Etyudi, 2001

1r1nQ3/4pp2/1p1R1R2/4p3/1pP1k1Pp/1K2p3/4N3/4N3

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Sc6
      • 2.Qxc6#
    • 1...Se6
      • 2.Qc6#
    • 1...Sb7
      • 2.Qc6#
    • 1...h3
      • 2.Sg3#
    • 1...exd6
      • 2.Rf4#
    • 1...exf6
      • 2.Rd4#
  • Tries
    • 1.Rde6?
      • threat
        • 2.Rf4#
      • 1...Sxe6
        • 2.Qc6#
      • 1...fxe6
        • 2.Qg6#
      • 1...exf6!
    • 1.Rfe6?
      • threat
        • 2.Rd4#
      • 1...Sxe6
        • 2.Qc6#
      • 1...fxe6
        • 2.Qg6#
      • 1...Sc6
        • 2.Qxc6#
      • 1...exd6!
    • 1.Qd7?
      • threat
        • 2.Qf5#
      • 1...Se6
        • 2.Qc6#
      • 1...e6!
    • 1.Qxf7?
      • threat
        • 2.Qd5#
        • 2.Qg6#
        • 2.Qh7#
      • 1...exf6
        • 2.Qd5#
      • 1...Se6
        • 2.Qg6#
        • 2.Qh7#
      • 1...e6
        • 2.Qg6#
        • 2.Qh7#
      • 1...Sxf7!
    • 1.Qxe7?
      • threat
        • 2.Rd4#
        • 2.Rf4#
      • 1...Sc6
        • 2.Rf4#
      • 1...Se6!
  • Keys
    • 1.Kxb4!
      • threat
        • 2.Sc3#
      • 1...Sc6+
        • 2.Qxc6#
      • 1...exd6
        • 2.Rf4#
      • 1...exf6
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • S(j);N_GUARD::QAB(H),XS(j)
    • S(j);N_GUARD::QAB(H)
    • P(d);N_GUARD::S(B)
    • P(g);P_SPINP(e),XR(F)::R1(G)
    • P(g);P_SPINP(e),XR(G)::R1(F)
  • Tries
    • Try
      • R(F);P_PINP(e)
      • Threat
        • R1(G)
      • Vars
        • S(j);N_GUARD,N_SPINP(e),XR(F)::QAB(H)
        • P(h);N_SPINP(e),OGATE,XR(F)::QAB(H)
      • Refutation
        • P(g);XR(G)
    • Try
      • R(G);P_PINP(e)
      • Threat
        • R1(F)
      • Vars
        • S(j);N_GUARD,N_SPINP(e),XR(G)::QAB(H)
        • P(h);N_SPINP(e),OGATE,XR(G)::QAB(H)
        • S(j);N_GUARD::QAB(H),XS(j)
      • Refutation
        • P(g);XR(F)
    • Try
      • Q(H);
      • Threat
        • QAB1(H)
      • Vars
        • S(j);N_GUARD::QAB(H)
      • Refutation
        • P(g);
    • Try
      • Q(H);XP(h)
      • Threat
        • DUALS(3)
      • Vars
        • P(g);XR(G)::QAB1(H)
      • Refutation
        • S(j);XQ(H)
    • Try
      • Q(H);P_PINP(e),XP(g)
      • Threat
        • DUALS(2)
      • Vars
        • S(j);::R1(G)
      • Refutation
        • S(j);N_SPINP(e)
  • Actual
    • K(C);P-FLIGHT,XP(b)
    • Threat
      • S(B)
    • Vars
      • S(j);CHECK,N_GUARD::QAB(H),XS(j)
      • P(g);P_SPINP(e),XR(F)::R1(G)
      • P(g);P_SPINP(e),XR(G)::R1(F)
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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).