MESON Chess Problem Database

Problem Display
PID: 210916 (1K6/2p1R1pQ/Npk2p2/Ppp5/2n5/5q2/6Bb/7b w - - 0 1)

Mehner, Heinrich

Badische Neueste Nachrichten, 1979

1K6/2p1R1pQ/Npk2p2/Ppp5/2n5/5q2/6Bb/7b

#2

6 + 11

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qd3?
      • threat
        • 2.Qd7#
      • 1...Qd5
        • 2.Qxd5#
      • 1...Bd6
        • 2.Qxf3#
      • 1...Se5
        • 2.Re6#
        • 2.Rxc7#
      • 1...Sd6
        • 2.Rxc7#
      • 1...bxa5!
    • 1.Qe4+?
      • 1...Kd6
        • 2.Qe6#
      • 1...Qxe4!
  • Keys
    • 1.Qf5!
      • threat
        • 2.Qd7#
      • 1...Kd6
        • 2.Qe6#
        • 2.Qd7#
      • 1...bxa5
        • 2.Qxc5#
      • 1...Se5
        • 2.Qe6#
      • 1...Bd6
        • 2.Qxf3#
      • 1...Sd6
        • 2.Rxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);
      • Threat
        • QAB1(E)
      • Vars
        • Q(c);N_GUARD::QAB1(E),XQ(c)
        • B(b);SBLOCK::QAB(E),XQ(c)
        • S(d);S_CUTB(b)::R1(D),XP(j)
      • Refutation
        • P(g);XP(B)
    • Try
      • Q(E);CHECK,N_PINQ(c)
      • Vars
        • K(h);P-FLIGHT::QAR1(E)
      • Refutation
        • Q(c);P_SPINQ(c),XQ(E)
  • Actual
    • Q(E);
    • Threat
      • QAB1(E)
    • Vars
      • P(g);N_GUARD,XP(B)::QAR1(E),XP(f)
      • S(d);N_GUARD,S_CUTB(b)::QAR2(E)
      • B(b);SBLOCK::QAB(E),XQ(c)
      • S(d);SBLOCK,S_CUTB(b)::R1(D),XP(j)
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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).