MESON Chess Problem Database

Problem Display
PID: 121461 (6N1/2pp4/P2kp2n/8/3BP2p/5P2/K7/6Q1 w - - 0 1)

Leopold, Dr Rudolf L

Deutsche Schachzeitung, 1916

6N1/2pp4/P2kp2n/8/3BP2p/5P2/K7/6Q1

#2

7 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...e5
      • 2.Qg6#
  • Tries
    • 1.Bc5+?
      • 1...Ke5
        • 2.Qh2#
      • 1...Kc6!
    • 1.Bb6?
      • threat
        • 2.Qc5#
      • 1...Ke5
        • 2.Qh2#
      • 1...Kc6
        • 2.Qc5#
      • 1...e5
        • 2.Qg6#
      • 1...c5
        • 2.Qxc5#
      • 1...cxb6!
    • 1.Qc1?
      • threat
        • 2.Qc5#
      • 1...e5
        • 2.Qxh6#
      • 1...c5
        • 2.Qxc5#
      • 1...c6!
    • 1.Qg5?
      • threat
        • 2.Qc5#
      • 1...Kc6
        • 2.Qc5#
      • 1...e5
        • 2.Qf6#
        • 2.Qxh6#
        • 2.Qg6#
      • 1...c5
        • 2.Qxc5#
      • 1...c6
        • 2.Qe5#
      • 1...Sf5!
  • Keys
    • 1.Ba7!
      • threat
        • 2.Qc5#
      • 1...Ke5
        • 2.Qh2#
      • 1...Kc6
        • 2.Qc5#
      • 1...c5
        • 2.Qxc5#
      • 1...e5
        • 2.Qg6#
      • 1...c6
        • 2.Bb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(c);OGATEB::QAR(A)
  • Tries
    • Try
      • B(D);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • B(D);
      • Threat
        • QAB1(A)
      • Vars
        • K(b);S_FLIGHT::QAB(A)
        • K(b);P-FLIGHT::QAR1(A)
        • P(c);OGATEB,SBLOCK::QAR(A)
        • P(e);::QAB1(A),XP(e)
      • Refutation
        • P(e);XB(D)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • P(c);OGATEB::QAR(A),XS(d)
        • P(e);::QAB1(A),XP(e)
      • Refutation
        • P(e);
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
        • P(e);::QAB1(A),XP(e)
        • P(e);SBLOCK::QAB1(A)
      • Refutation
        • S(d);
  • Actual
    • B(D);
    • Threat
      • QAB1(A)
    • Vars
      • K(b);S_FLIGHT::QAB(A)
      • K(b);P-FLIGHT::QAR1(A)
      • P(e);::QAB1(A),XP(e)
      • P(c);OGATEB,SBLOCK::QAR(A)
      • P(e);OGATEB,SBLOCK::B(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).