MESON Chess Problem Database

Problem Display
PID: 163533 (3Q4/8/3Kp3/2p1p3/P7/3k1pP1/R4B2/1N6 w - - 0 1)

Hermanson, Halvar

Novi Temi, 1973

3Q4/8/3Kp3/2p1p3/P7/3k1pP1/R4B2/1N6

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...c4
      • 2.Kxe5#
    • 1...e4
      • 2.Kxc5#
  • Tries
    • 1.Kxe6+?
      • 1...Ke4
        • 2.Sd2#
        • 2.Sc3#
        • 2.Qd5#
      • 1...Kc4!
    • 1.Qb6?
      • 1...Kc4
        • 2.Qb5#
      • 1...c4
        • 2.Qe3#
      • 1...e4
        • 2.Qb3#
      • 1...Ke4!
    • 1.Qf6?
      • 1...Ke4
        • 2.Qg6#
      • 1...c4
        • 2.Qxf3#
      • 1...e4
        • 2.Qc3#
      • 1...Kc4!
  • Keys
    • 1.Qd7!
      • 1...Kc4
        • 2.Qb5#
      • 1...Ke4
        • 2.Qh7#
      • 1...c4
        • 2.Kxe5#
      • 1...e4
        • 2.Kxc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK::QAR(G)+K(F),XP(d)
    • P(d);SBLOCK::QAR(G)+K(F),XP(c)
  • Tries
    • Try
      • K(F);CHECK,P-FLIGHT,XP(e)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(G);
      • Vars
        • K(a);S_FLIGHT::QAB1(G)
        • P(c);OGATE,SBLOCK::QAR1(G)
        • P(d);SBLOCK::QAR2(G)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(G);
      • Vars
        • K(a);S_FLIGHT::QAB(G)
        • P(c);SBLOCK::QAR2(G),XP(b)
        • P(d);OGATE,SBLOCK::QAR1(G)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(G);
    • Vars
      • K(a);S_FLIGHT::QAB1(G)
      • K(a);S_FLIGHT::QAB(G)
      • P(c);SBLOCK::QAR(G)+K(F),XP(d)
      • P(d);SBLOCK::QAR(G)+K(F),XP(c)
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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).