MESON Chess Problem Database

Problem Display
PID: 146632 (1Qr5/nN1p1P2/3p4/p2P1K2/1b1kP3/8/8/3N1B2 w - - 0 1)

Meschick, AG

Good Companions (February), 1918

1Qr5/nN1p1P2/3p4/p2P1K2/1b1kP3/8/8/3N1B2

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Qh8#
    • 1...Rc2
      • 2.Qh8#
    • 1...Rc3
      • 2.Qh8#
    • 1...Rc4
      • 2.Qh8#
    • 1...Rc5
      • 2.Qh8#
    • 1...Rc6
      • 2.Qh8#
    • 1...Rc7
      • 2.Qh8#
    • 1...Rh8
      • 2.Qxh8#
  • Keys
    • 1.Sc5!
      • threat
        • 2.Sb3#
      • 1...Kxc5
        • 2.Qxa7#
      • 1...Rxc5
        • 2.Qh8#
      • 1...Bxc5
        • 2.Qb2#
      • 1...dxc5
        • 2.Qe5#
      • 1...a4
        • 2.Qxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • R(g);OGATE::QAB(H)
    • R(g);OGATE,P_PINP(D)::QAB(H)
    • R(g);OGATE::QAB(H),XR(g)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • K(b);OGATEB,S_FLIGHT,XS(F)::QAB(H),XS(e)
      • R(g);OGATE,P_PINP(D),SBLOCK,XS(F)::QAB(H)
      • B(a);OGATE,SBLOCK,XS(F)::QAB(H)
      • P(d);OGATE,SBLOCK,XS(F)::QAB1(H)
      • P(c);N_GUARD::QAR2(H),XB(a)
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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).