MESON Chess Problem Database

Problem Display
PID: 246062 (8/QNq1p1pP/nNpn4/2pPkb1R/7B/4K3/8/3R4 w - - 0 1)

Svitek, Miroslav

SuperProblem, 2019

8/QNq1p1pP/nNpn4/2pPkb1R/7B/4K3/8/3R4

#2

9 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qb8
      • 2.Sd7#
    • 1...Qd7
      • 2.Sxd7#
    • 1...Sb4
      • 2.Qa1#
    • 1...Sb8
      • 2.Qa1#
    • 1...Sc4+
      • 2.Sxc4#
    • 1...Se4
      • 2.Sc4#
    • 1...Sb5
      • 2.Sc4#
    • 1...Sxb7
      • 2.Sc4#
    • 1...Sf7
      • 2.Sc4#
    • 1...Sc8
      • 2.Sc4#
    • 1...Se8
      • 2.Sc4#
    • 1...g5
      • 2.h8Q#
      • 2.h8B#
    • 1...g6
      • 2.h8Q#
      • 2.h8B#
  • Keys
    • 1.Sxc5!
      • threat
        • 2.Sd3#
      • 1...Sc4+
        • 2.Sxc4#
      • 1...Qxb6
        • 2.Qxe7#
      • 1...Sxc5
        • 2.Qa1#
      • 1...cxd5
        • 2.Rxd5#
      • 1...Se4
        • 2.Sc4#
      • 1...Sb5
        • 2.Sc4#
      • 1...Sb7
        • 2.Sc4#
      • 1...Sf7
        • 2.Sc4#
      • 1...Sc8
        • 2.Sc4#
      • 1...Se8
        • 2.Sc4#
      • 1...g5
        • 2.h8Q#
        • 2.h8B#
      • 1...Sb4
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • Q(g);N_GUARD::S(F)
    • Q(g);N_GUARD::S(F),XQ(g)
    • S(d);OGATE::QAB(G)
    • S(f);CHECK,N_GUARD::S(F),XS(f)
    • S(f);N_GUARD::S(F)
    • S(f);N_GUARD,XS(H)::S(F)
    • P(i);N_SPINB(c)::P=Q
    • P(i);::P=Q
  • Actual
    • S(H);XP(a)
    • Threat
      • S(H)
    • Vars
      • S(f);CHECK,N_GUARD::S(F),XS(f)
      • Q(g);OGATE,P_PINS(H),XS(F)::QAR2(G),XP(h)
      • S(d);OGATE,XS(H)::QAB(G)
      • P(e);OGATE,XP(D)::R1(A),XP(e)
      • S(f);N_GUARD::S(F)
      • P(i);N_SPINB(c)::P=Q
      • S(d);OGATE::QAB(G)
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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).