MESON Chess Problem Database

Problem Display
PID: 143602 (K4R2/7p/p2p2p1/Qb2k3/1N2p3/2P1n2B/3PNP2/4R3 w - - 0 1)

Handloser, Ralf Chris

3rd HM., Probleemblad, 2011

K4R2/7p/p2p2p1/Qb2k3/1N2p3/2P1n2B/3PNP2/4R3

#2

10 + 8

102 Probleemblad 2012

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.Qc7#
  • Tries
    • 1.Sd4?
      • threat
        • 2.Sdc6#
      • 1...d5
        • 2.Qc7#
      • 1...Sg4
        • 2.f4#
      • 1...Sd5
        • 2.Sf3#
      • 1...Sf5!
    • 1.Qd8?
      • threat
        • 2.Qf6#
        • 2.Qe7#
      • 1...Sg4
        • 2.Qe7#
      • 1...Sf5
        • 2.Qf6#
      • 1...Bc4
        • 2.Qf6#
      • 1...Bd7
        • 2.Qf6#
      • 1...Sd5
        • 2.Qg5#
      • 1...Bc6+!
    • 1.Qxb5+?
      • 1...Sd5
        • 2.Sc6#
        • 2.Qxd5#
      • 1...d5
        • 2.Qb8#
      • 1...axb5!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Sc6#
      • 1...Sf5
        • 2.Sbd3#
      • 1...d5
        • 2.Qc7#
      • 1...Sd5
        • 2.d4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(f);N_SPINB(c),OGATEB::QAB(H)
  • Tries
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • P(f);N_SPINB(c),OGATEB::QAB(H)
        • S(a);P_SPINP(b)::P(D)
        • S(a);N_SPINB(c),P_SPINP(b)::S(C)
      • Refutation
        • S(a);P_SPINP(b)
    • Try
      • Q(H);N_PINB(c)
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::QAR2(H)
        • S(a);::QAB1(H)
        • B(c);::QAB1(H)
        • S(a);N_GUARD::QAR2(H)
      • Refutation
        • B(c);CHECK
    • Try
      • Q(H);CHECK,XB(c)
      • Vars
        • P(f);OGATEB,P_SPINP(f)::QAB(H)
      • Refutation
        • P(e);XQ(H)
  • Actual
    • S(C);
    • Threat
      • S(G)
    • Vars
      • S(a);P_SPINP(b)::S(G)
      • P(f);N_SPINB(c),OGATEB::QAB(H)
      • S(a);N_SPINB(c),P_SPINP(b)::P(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).