MESON Chess Problem Database

Problem Display
PID: 250136 (6K1/8/3R2p1/3pk1r1/1Q1pP3/1N1p2P1/1qp3n1/7B w - - 0 1)

Meyer, Kurt

14th Prize, Kagans Neueste Schachnachrichten, 1927

6K1/8/3R2p1/3pk1r1/1Q1pP3/1N1p2P1/1qp3n1/7B

#2

7 + 9

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...dxe4
      • 2.Qc5#
  • Tries
    • 1.Rxd5+?
      • 1...Ke6
        • 2.Qd6#
      • 1...Kf6
        • 2.Qd6#
      • 1...Kxe4!
  • Keys
    • 1.Rf6!
      • threat
        • 2.Qe7#
      • 1...Kxe4
        • 2.Qe1#
      • 1...Kxf6
        • 2.Qd6#
      • 1...dxe4
        • 2.Qd6#
      • 1...Qa3
        • 2.Qxd4#
      • 1...Sf4
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(f);OGATEB,SBLOCK,XP(E)::QAR2(D)
  • Tries
    • Try
      • R(F);CHECK,XP(f)
      • Vars
        • K(g);N_GUARD,P-FLIGHT::QAR1(D)
        • K(g);N_GUARD,S_FLIGHT::QAR2(D)
      • Refutation
        • K(g);P-FLIGHT,P_SPINP(e),P_SPINS(c),XP(E)
  • Actual
    • R(F);
    • Threat
      • QAR2(D)
    • Vars
      • K(g);OGATEB,P-FLIGHT,P_SPINP(e),P_SPINS(c),XP(E)::QAR(D)
      • K(g);N_GUARD,S_FLIGHT,XR(F)::QAR2(D)
      • P(f);SBLOCK,XP(E)::QAB1(D)
      • Q(a);N_GUARD::QAB1(D),XP(e)
      • S(c);::QAB1(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).