MESON Chess Problem Database

Problem Display
PID: 264189 (8/1pK1Nnq1/p1BN4/2p1RpP1/2pk4/3P2br/b1Q5/8 w - - 0 1)

Hjelle, David

Tijdschrift vd KNSB, 1957

8/1pK1Nnq1/p1BN4/2p1RpP1/2pk4/3P2br/b1Q5/8

#2

8 + 11

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe5
      • 2.Sxf5#
    • 1...Sxe5
      • 2.Sxf5#
    • 1...cxd3
      • 2.Qb2#
      • 2.Qxc5#
    • 1...f4
      • 2.Re4#
    • 1...bxc6
      • 2.Sxc6#
  • Keys
    • 1.Qd2!
      • threat
        • 2.Rd5#
      • 1...Kxe5
        • 2.Qe3#
      • 1...Qxe5
        • 2.dxc4#
      • 1...Bxe5
        • 2.Sxf5#
      • 1...Sxe5
        • 2.Sxf5#
      • 1...cxd3
        • 2.Qb2#
      • 1...bxc6
        • 2.Sxc6#
      • 1...c3
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • B(b);P_PINS(F),SBLOCK,XR(C)::S(H),XP(g)
    • S(j);P_PINS(H),SBLOCK,XR(C)::S(F),XP(g)
    • P(g);N_GUARD::R1(C)
    • P(i);XB(E)::S(H),XP(i)
  • Actual
    • Q(A);
    • Threat
      • R1(C)
    • Vars
      • K(e);N_GUARD,S_FLIGHT,XR(C)::QAR2(A)
      • Q(k);P_PINS(F),SBLOCK,XR(C)::QAR(A)+P(B),XP(d)
      • B(b);P_PINS(F),SBLOCK,XR(C)::S(H),XP(g)
      • S(j);P_PINS(H),SBLOCK,XR(C)::S(F),XP(g)
      • P(d);N_GUARD,P_SPINP(d),SBLOCK,XP(B)::QAB(A)
      • P(i);XB(E)::S(H),XP(i)
      • P(d);SBLOCK::QAB1(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).