MESON Chess Problem Database

Problem Display
PID: 116356 (8/2p5/4B3/2P1q1P1/3PkP2/2R1P3/4Q3/1K2n3 w - - 0 1)

Hermanson, Halvar

Boletim da UBP, 1965

8/2p5/4B3/2P1q1P1/3PkP2/2R1P3/4Q3/1K2n3

#2

9 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sc2
      • 2.Qg2#
    • 1...Sg2
      • 2.Qxg2#
    • 1...Sf3
      • 2.Qd3#
      • 2.Qc2#
  • Tries
    • 1.Qg2+?
      • 1...Sf3
        • 2.Qc2#
      • 1...Sxg2!
    • 1.fxe5?
      • threat
        • 2.Qg4#
      • 1...Sg2
        • 2.Qxg2#
      • 1...Sf3
        • 2.Qd3#
        • 2.Qc2#
      • 1...Sd3!
  • Keys
    • 1.dxe5!
      • threat
        • 2.Rc4#
      • 1...Sc2
        • 2.Qg2#
      • 1...Sf3
        • 2.Qd3#
        • 2.Qc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • S(a);N_GUARD::QAB(B)
    • S(a);N_GUARD::QAB(B),XS(a)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a),SBLOCK::QAB(B)
      • Refutation
        • S(a);XQ(B)
    • Try
      • P(F);XQ(c)
      • Threat
        • QAR2(B)
      • Vars
        • S(a);N_GUARD::QAB(B),XS(a)
      • Refutation
        • S(a);
  • Actual
    • P(E);XQ(c)
    • Threat
      • R(C)
    • Vars
      • S(a);N_GUARD::QAB(B)
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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).