MESON Chess Problem Database

Problem Display
PID: 273180 (1N6/1pbp4/bRp5/k7/8/1P1p4/1n3Q2/B6K w - - 0 1)

Alstad, H

Probleemblad, 1952

1N6/1pbp4/bRp5/k7/8/1P1p4/1n3Q2/B6K

#2

6 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sa4
      • 2.b4#
    • 1...Sc4
      • 2.Bc3#
  • Keys
    • 1.Rxb7!
      • threat
        • 2.Qd2#
      • 1...Bxb7
        • 2.Qc5#
      • 1...Bb6
        • 2.Qxb6#
      • 1...Bf4
        • 2.Qb6#
      • 1...Be5
        • 2.Qb6#
      • 1...Bd6
        • 2.Qb6#
      • 1...Sd1
        • 2.Qa2#
      • 1...Sa4
        • 2.b4#
      • 1...Sc4
        • 2.Bc3#
      • 1...d2
        • 2.Qxd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(a);SBLOCK::P(D)
    • S(a);OGATE::B(A)
  • Actual
    • R(E);XP(f)
    • Threat
      • QAB(C)
    • Vars
      • B(d);N_GUARD,XR(E)::QAR2(C)
      • B(g);N_GUARD::QAB1(C),XB(g)
      • B(g);N_GUARD::QAB1(C)
      • S(a);OGATE::QAR(C)
      • S(a);SBLOCK::P(D)
      • S(a);OGATE::B(A)
      • P(b);::QAB(C),XP(b)
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).