MESON Chess Problem Database

Problem Display
PID: 202617 (8/7B/4nK2/3p4/4q2N/N1Bk2p1/3PbQn1/6b1 w - - 0 1)

Boros, Sandor

Nepszava, 1923

8/7B/4nK2/3p4/4q2N/N1Bk2p1/3PbQn1/6b1

#2

7 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qf5+
      • 2.Bxf5#
      • 2.Qxf5#
    • 1...Qg6+
      • 2.Bxg6#
    • 1...Bf1
      • 2.Qxf1#
  • Tries
    • 1.Bxe4+?
      • 1...Kxe4
        • 2.Qf5#
      • 1...dxe4!
  • Keys
    • 1.Sg6!
      • threat
        • 2.Se5#
      • 1...Qf3+
        • 2.Sf4#
      • 1...Qf5+
        • 2.Qxf5#
      • 1...Qxg6+
        • 2.Bxg6#
      • 1...Qf4+
        • 2.Sxf4#
      • 1...Qh4+
        • 2.Sxh4#
      • 1...Qe5+
        • 2.Sxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • Q(f);CHECK,OGATEB::B(G),XQ(f)
    • B(b);OGATEB::QAB(B),XB(b)
  • Tries
    • Try
      • B(G);CHECK,XQ(f)
      • Vars
        • K(d);S_FLIGHT,XB(G)::QAB1(B)
      • Refutation
        • P(g);XB(G)
  • Actual
    • S(E);N_PINQ(f)
    • Threat
      • S(E)
    • Vars
      • Q(f);CHECK::B(G)+S(E),DCHECK
      • Q(f);CHECK,OGATEB::QAB(B),XQ(f)
      • Q(f);CHECK,OGATE,P_SPINQ(f),XS(E)::B(G),XQ(f)
      • Q(f);CHECK::B(G)+S(E),DCHECK,XQ(f)
      • Q(f);CHECK::B(G)+S(E),XQ(f)
HTML5 logo

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).