MESON Chess Problem Database

Problem Display
PID: 97913 (8/b2BPr1p/5p1K/R3N2p/1R1pkP2/3p1N2/1n1B4/Q1r5 w - - 0 1)

Haring, Jacobus

Problemas, 1980

8/b2BPr1p/5p1K/R3N2p/1R1pkP2/3p1N2/1n1B4/Q1r5

#2

10 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Re1
      • 2.Qxe1#
    • 1...Rc2
      • 2.Qe1#
    • 1...Rc3
      • 2.Qe1#
    • 1...Rc4
      • 2.Qe1#
    • 1...Rc5
      • 2.Rxd4#
    • 1...Rc6
      • 2.Qe1#
    • 1...Rc7
      • 2.Qe1#
    • 1...Rc8
      • 2.Qe1#
    • 1...Bb8
      • 2.Rxd4#
    • 1...fxe5
      • 2.Sg5#
    • 1...f5
      • 2.Sg5#
  • Tries
    • 1.Sh4?
      • threat
        • 2.Bf5#
      • 1...fxe5
        • 2.Rxe5#
      • 1...Rc5
        • 2.Qh1#
      • 1...Bc5
        • 2.Bc6#
      • 1...f5!
  • Keys
    • 1.Rc5!
      • threat
        • 2.Rxd4#
      • 1...Bxc5
        • 2.Qa8#
      • 1...fxe5
        • 2.Sg5#
      • 1...Rc4
        • 2.Qe1#
      • 1...Sc4
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 9
  • Sets
    • R(a);OGATE::QAR(A),XR(a)
    • R(a);OGATE::QAR(A)
    • R(a);N_SPINP(d),OGATE::QAR(A)
    • R(a);S_CUTB(h)::R1(D),XP(d)
    • B(h);N_GUARD::R1(D),XP(d)
    • P(g);N_GUARD,XS(G)::S(C)
    • P(g);N_GUARD::S(C)
  • Tries
    • Try
      • S(C);
      • Threat
        • B(I)
      • Vars
        • P(g);OGATE,XS(G)::R1(F),XP(g)
        • R(a);OGATE::QAB(A)
        • B(h);S_CUTR(a)::B(I)
      • Refutation
        • P(g);
  • Actual
    • R(F);
    • Threat
      • R1(D),XP(d)
    • Vars
      • B(h);OGATE,XR(F)::QAB(A)
      • P(g);N_GUARD,XS(G)::S(C)
      • R(a);N_SPINP(d),OGATE::QAR(A)
      • S(b);N_SPINP(d),OGATE::QAR1(A),XP(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).