MESON Chess Problem Database

Problem Display
PID: 73229 (3qBR2/4p3/1N1pP3/2pPk3/2P5/4KPr1/8/4Nb2 w - - 0 1)

van Heiningen, N

Tijdschrift vd KNSB, 1942

3qBR2/4p3/1N1pP3/2pPk3/2P5/4KPr1/8/4Nb2

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qd7
      • 2.Sxd7#
    • 1...Qa8
      • 2.Sd7#
    • 1...Qb8
      • 2.Sd7#
    • 1...Rg1
      • 2.f4#
    • 1...Rg2
      • 2.f4#
    • 1...Rxf3+
      • 2.Sxf3#
    • 1...Rg5
      • 2.f4#
    • 1...Rg6
      • 2.f4#
    • 1...Rg7
      • 2.f4#
    • 1...Rg8
      • 2.f4#
    • 1...Bg2
      • 2.Sd3#
    • 1...Bd3
      • 2.Sxd3#
    • 1...Bh3
      • 2.Sd3#
  • Keys
    • 1.Bg6!
      • threat
        • 2.Rf5#
      • 1...Rxf3+
        • 2.Sxf3#
      • 1...Qxf8
        • 2.Sd7#
      • 1...Rxg6
        • 2.f4#
      • 1...Rg5
        • 2.f4#
      • 1...Bd3
        • 2.Sxd3#
      • 1...Bh3
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 8
  • Sets
    • Q(g);N_GUARD::S(F),XQ(g)
    • Q(g);N_GUARD::S(F)
    • R(b);N_PINP(C)::P(C)
    • R(b);CHECK,XP(C)::S(A),XR(b)
    • B(a);N_GUARD::S(A)
    • B(a);N_GUARD::S(A),XB(a)
  • Actual
    • B(H);
    • Threat
      • R1(I)
    • Vars
      • R(b);CHECK,XP(C)::S(A),XR(b)
      • Q(g);N_GUARD,XR(I)::S(F)
      • R(b);N_PINP(C),XB(H)::P(C)
      • R(b);N_PINP(C)::P(C)
      • B(a);N_GUARD::S(A),XB(a)
      • B(a);N_GUARD::S(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).