MESON Chess Problem Database

Problem Display
PID: 141531 (Q2K2B1/2p1p3/2PpP1p1/b1Pk1Nq1/1P1p4/2RP4/r3P2B/8 w - - 0 1)

Bijpost, M

Probleemblad, 1977

Q2K2B1/2p1p3/2PpP1p1/b1Pk1Nq1/1P1p4/2RP4/r3P2B/8

#2

12 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qc1
      • 2.Sxe7#
    • 1...Qd2
      • 2.Sxe7#
    • 1...Qe3
      • 2.Sxe7#
    • 1...Qh6
      • 2.Sxe7#
    • 1...Qg1
      • 2.Sxe7#
    • 1...Qg2
      • 2.Sxe7#
    • 1...Qg4
      • 2.Sxe7#
    • 1...Qh5
      • 2.Sxe7#
    • 1...dxc3
      • 2.e4#
    • 1...dxc5
      • 2.Rxc5#
  • Keys
    • 1.cxd6!
      • threat
        • 2.Rc5#
      • 1...cxd6+
        • 2.c7#
      • 1...exd6+
        • 2.e7#
      • 1...Bxb4
        • 2.Qxa2#
      • 1...dxc3
        • 2.e4#
      • 1...Qc1
        • 2.Sxe7#
      • 1...Rc2
        • 2.Qxa5#
      • 1...Bb6
        • 2.Qxa2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 8
  • Sets
    • Q(e);N_GUARD::S(G),XP(i)
    • P(b);N_GUARD,XR(C)::P(A)
    • P(f);OGATE,XP(F)::R1(C),XP(f)
  • Actual
    • P(F);XP(f)
    • Threat
      • R1(C)
    • Vars
      • P(h);CHECK,OGATE,XP(F)::QAB(J)+P(H)
      • P(i);CHECK,OGATE,XP(F)::B(L)+P(I)
      • B(c);OGATE,XP(E)::QAB(J),XR(a)
      • P(b);N_GUARD,XR(C)::P(A)
      • Q(e);N_GUARD::S(G),XP(i)
      • R(a);N_GUARD::QAR(J),XB(c)
      • B(c);OGATE::QAB(J),XR(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).