MESON Chess Problem Database

Problem Display
PID: 174196 (5BK1/N1p1RBPp/3k2qQ/1pp1p2b/2p5/8/8/8 w - - 0 1)

Buchner, Richard

Volkstimme, 1926

5BK1/N1p1RBPp/3k2qQ/1pp1p2b/2p5/8/8/8

#2

7 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qe6
      • 2.Qxe6#
    • 1...Qf6
      • 2.Qd2#
      • 2.Qxf6#
    • 1...e4
      • 2.Qd2#
      • 2.Qf4#
    • 1...c6
      • 2.Sc8#
      • 2.Rb7#
  • Tries
    • 1.Bxc4?
      • threat
        • 2.Rf7#
      • 1...e4
        • 2.Qd2#
        • 2.Qf4#
      • 1...bxc4!
  • Keys
    • 1.Be6!
      • threat
        • 2.Re8#
      • 1...Qf7+
        • 2.Rxf7#
      • 1...Qxe6+
        • 2.Qxe6#
      • 1...Qxg7+
        • 2.Rxg7#
      • 1...e4
        • 2.Qf4#
      • 1...Qf5
        • 2.Rd7#
        • 2.Rf7#
      • 1...Qe8
        • 2.Rd7#
        • 2.Rxe8#
        • 2.Qd2#
      • 1...Qg5
        • 2.Rd7#
      • 1...Qf6
        • 2.Qd2#
      • 1...c6
        • 2.Sc8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • Q(g);N_PINP(E),OGATE,P_PINB(D)::QAR1(A),XQ(g)
  • Tries
    • Try
      • B(D);XP(a)
      • Threat
        • B(F)+R(C)
      • Refutation
        • P(b);XB(D)
  • Actual
    • B(D);N_PINQ(g)
    • Threat
      • B(F)+R(C)
    • Vars
      • Q(g);CHECK,N_PINP(E)::B(F)+R(C),XQ(g)
      • Q(g);CHECK,N_PINP(E),OGATE,P_SPINQ(g),XB(D)::QAR1(A),XQ(g)
      • Q(g);CHECK,OGATE,XP(E)::B(F)+R(C),XQ(g)
      • P(d);OGATEB::QAB(A)
      • Q(g);::B(F)+R(C),DCHECK
      • Q(g);N_GUARD,N_PINP(E)::QAR(A)
      • P(h);SBLOCK::S(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).