MESON Chess Problem Database

Problem Display
PID: 173749 (1N6/1R2p1Q1/1r4pK/pkb2bR1/p1p5/B1P4B/6p1/4n1q1 w - - 0 1)

Boros, Sandor

Shakhmatny Listok, 1929

1N6/1R2p1Q1/1r4pK/pkb2bR1/p1p5/B1P4B/6p1/4n1q1

#2

8 + 12

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Bd7#
    • 1...Bc2
      • 2.Bd7#
    • 1...Bd3
      • 2.Bd7#
    • 1...Bd7
      • 2.Bxd7#
    • 1...e6
      • 2.Qd7#
  • Keys
    • 1.Qxg6!
      • threat
        • 2.Qc6#
      • 1...Bxg6
        • 2.Bd7#
      • 1...Bd6
        • 2.Qe8#
      • 1...Be4
        • 2.Rxb6#
        • 2.Qxb6#
      • 1...Be6
        • 2.Qb1#
      • 1...Bd7
        • 2.Bxd7#
        • 2.Rxb6#
        • 2.Qxb6#
      • 1...e6
        • 2.Qe8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • B(i);OGATE,P_SPINB(h)::B(C)
    • B(i);OGATE,P_SPINB(h)::B(C),XB(i)
    • P(l);OGATE::QAB(G)
  • Actual
    • Q(G);P_SPINQ(G),XP(k)
    • Threat
      • QAB1(G)
    • Vars
      • B(i);OGATE,P_SPINB(h),XQ(G)::B(C)
      • B(h);N_PINQ(G),P_SPINB(i)::QAB(G)
      • B(i);N_PINQ(G),P_SPINB(h)::QAR(G)
      • P(l);N_PINQ(G)::QAB(G)
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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).