MESON Chess Problem Database

Problem Display
PID: 264195 (3Qr3/2p5/2Rpk2N/2PnP3/1pn4K/1B1N4/7B/2r5 w - - 0 1)

Hjelle, David

Karlstrom, Alfred Olaf

Tijdschrift vd KNSB, 1947

3Qr3/2p5/2Rpk2N/2PnP3/1pn4K/1B1N4/7B/2r5

#2

9 + 8

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.Qxe8#
    • 1...Sd2
      • 2.Qxe8#
    • 1...Sa3
      • 2.Qxe8#
    • 1...Sce3
      • 2.Qxe8#
    • 1...Sa5
      • 2.Qxe8#
    • 1...Sxe5
      • 2.Sf4#
    • 1...Scb6
      • 2.Qxe8#
  • Keys
    • 1.cxd6!
      • threat
        • 2.Sc5#
      • 1...Sxe5
        • 2.Sf4#
      • 1...Sxd6
        • 2.Qxe8#
      • 1...Sc3
        • 2.dxc7#
      • 1...Sde3
        • 2.dxc7#
      • 1...Sf4
        • 2.dxc7#
      • 1...Sdb6
        • 2.dxc7#
      • 1...Sf6
        • 2.dxc7#
      • 1...Se7
        • 2.dxe7#
      • 1...Sb2
        • 2.Qxe8#
      • 1...Sd2
        • 2.Qxe8#
      • 1...Sa3
        • 2.Qxe8#
      • 1...Sce3
        • 2.Qxe8#
      • 1...Sa5
        • 2.Qxe8#
      • 1...Scb6
        • 2.Qxe8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(c);P_SPINS(d)::QAR2(I),XR(h)
    • S(c);P_SPINS(d),SBLOCK,XP(F)::S(C)
  • Actual
    • P(E);XP(e)
    • Threat
      • S(C)
    • Vars
      • S(c);P_SPINS(d),SBLOCK,XP(F)::S(C)
      • S(c);P_SPINS(d),XP(E)::QAR2(I),XR(h)
      • S(d);P_SPINS(c)::R(G)+P(E),XP(g)
      • S(d);OGATE,P_SPINS(c)::R(G)+P(E),XS(d)
      • S(c);P_SPINS(d)::QAR2(I),XR(h)
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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).