MESON Chess Problem Database

Problem Display
PID: 107735 (1n1b4/8/1p4pq/1P1k2rR/1P2p3/2R1PPQB/7B/6K1 w - - 0 1)

Berg, Wolfgang

8th Comm., Wola Gulowska, 1997

1n1b4/8/1p4pq/1P1k2rR/1P2p3/2R1PPQB/7B/6K1

#2

10 + 8

15345 Wola Gulowska Award 1997
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Qxe5#
    • 1...Rf5
      • 2.Qd6#
    • 1...Rxh5
      • 2.Qd6#
  • Tries
    • 1.Rxg5+?
      • 1...Bxg5
        • 2.Qe5#
        • 2.Qd6#
      • 1...Qxg5!
    • 1.Qg2?
      • threat
        • 2.fxe4#
      • 1...Re5
        • 2.Qd2#
      • 1...Rf5
        • 2.Qa2#
      • 1...exf3!
  • Keys
    • 1.Qg4!
      • threat
        • 2.fxe4#
      • 1...exf3
        • 2.Rd3#
      • 1...Re5
        • 2.Qe6#
      • 1...Rf5
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • R(c);N_PINQ(F)::QAR1(F),XR(c)
    • R(c);N_PINQ(F)::QAR1(F)
    • R(c);N_PINQ(F),N_SPINR(c),XR(J)::QAR1(F)
  • Tries
    • Try
      • R(J);CHECK,N_SPINQ(F),XR(c)
      • Refutation
        • Q(f);P_PINQ(F),XR(J)
    • Try
      • Q(F);
      • Threat
        • P(E),XP(a)
      • Vars
        • R(c);N_PINQ(F)::QAR(F)
        • R(c);N_PINQ(F)::QAB(F)
      • Refutation
        • P(a);P_SPINP(a),XP(E)
  • Actual
    • Q(F);
    • Threat
      • P(E),XP(a)
    • Vars
      • P(a);N_GUARD,XP(E)::R(C)
      • R(c);N_PINQ(F)::QAB1(F)
      • R(c);N_PINQ(F)::QAB1(F),XP(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).