MESON Chess Problem Database

Problem Display
PID: 108341 (2N1Rq2/pK1kpPb1/1B1P4/4p1N1/4P3/5R2/2pp4/3B4 w - - 0 1)

Groeneveld, Cornelis

Telescacco 92, 1995

2N1Rq2/pK1kpPb1/1B1P4/4p1N1/4P3/5R2/2pp4/3B4

#2

10 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf7
      • 2.Rd8#
    • 1...Qg8
      • 2.Rxe7#
    • 1...Qh8
      • 2.Rxe7#
    • 1...c1S
      • 2.Ba4#
    • 1...c1B
      • 2.Ba4#
  • Tries
    • 1.Rc3?
      • threat
        • 2.Rc7#
      • 1...Qxf7
        • 2.Rd8#
      • 1...c1Q
        • 2.Ba4#
      • 1...c1R
        • 2.Ba4#
      • 1...Qxe8!
    • 1.Rd3?
      • threat
        • 2.dxe7#
      • 1...Qxf7
        • 2.Rd8#
      • 1...exd6
        • 2.Bg4#
      • 1...c1S
        • 2.Ba4#
      • 1...e6!
  • Keys
    • 1.dxe7!
      • threat
        • 2.Rd3#
      • 1...Qxe7
        • 2.Rxe7#
      • 1...Qxf7
        • 2.Rd8#
      • 1...c1S
        • 2.Ba4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • Q(h);N_GUARD,XP(H)::R1(J)
    • Q(h);N_GUARD::R1(J),XP(f)
    • P(a);OGATE::B(A)
  • Tries
    • Try
      • R(B);
      • Threat
        • R1(B)
      • Vars
        • Q(h);N_GUARD,XP(H)::R1(J)
        • P(a);OGATE::B(A)
      • Refutation
        • Q(h);XR(J)
    • Try
      • R(B);
      • Threat
        • R(B)+P(F),XP(f)
      • Vars
        • Q(h);N_GUARD,XP(H)::R1(J)
        • P(f);N_GUARD,P_SPINP(f),XP(F)::B(A)
        • P(a);OGATE::B(A)
      • Refutation
        • P(f);
  • Actual
    • P(F);XP(f)
    • Threat
      • R(B)
    • Vars
      • Q(h);OGATE,XP(F)::R1(J),XQ(h)
      • Q(h);N_GUARD,XP(H)::R1(J)
      • P(a);OGATE::B(A)
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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).