MESON Chess Problem Database

Problem Display
PID: 223084 (1BR5/2p1p3/N2k3q/2RpN1P1/5p2/2r2P1p/1Q2n2K/8 w - - 0 1)

Hulsen, Bernhard

Deutsche Schachzeitung, 1885

1BR5/2p1p3/N2k3q/2RpN1P1/5p2/2r2P1p/1Q2n2K/8

#2

9 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qe6
      • 2.Bxc7#
    • 1...Ra3
      • 2.Rc6#
    • 1...Rb3
      • 2.Rc6#
    • 1...Rd3
      • 2.Rc6#
    • 1...Re3
      • 2.Rc6#
    • 1...Rxf3
      • 2.Rc6#
    • 1...d4
      • 2.Qb6#
  • Keys
    • 1.Sxc7!
      • threat
        • 2.Rxd5#
      • 1...Kxc5
        • 2.Se6#
      • 1...Kxe5
        • 2.Rxd5#
      • 1...Rxc5
        • 2.Rd8#
      • 1...e6
        • 2.Sxd5#
      • 1...Qe6
        • 2.Sb5#
        • 2.Sxd5#
        • 2.Sa6#
        • 2.Sa8#
        • 2.Se8#
      • 1...Rd3
        • 2.Rc6#
      • 1...d4
        • 2.Rd5#
        • 2.Qb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • Q(g);SBLOCK::B(H),XP(h)
    • R(b);N_GUARD::R1(D)
    • R(b);N_GUARD,XP(C)::R1(D)
    • P(e);::QAR2(A)
  • Actual
    • S(G);XP(h)
    • Threat
      • R1(D),XP(e)
    • Vars
      • K(f);S_FLIGHT,XR(D)::R(I)+S(G),DCHECK
      • K(f);P_SPINP(e),P_SPINR(b),S_FLIGHT,XS(E)::R1(D),XP(e)
      • R(b);SBLOCK,XR(D)::R(I)
      • P(i);SBLOCK::B(H)+S(G),XP(e)
      • R(b);N_GUARD::R1(D)
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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).