MESON Chess Problem Database

Problem Display
PID: 243952 (5b2/1r1NN1pn/RP2kpP1/3Rrp2/5P2/B7/5Q2/K7 w - - 0 1)

Gvozdjak, Peter

Sachove umeni (Ceskoslovensky sach), 1981

5b2/1r1NN1pn/RP2kpP1/3Rrp2/5P2/B7/5Q2/K7

#2

10 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Re1+
      • 2.Qxe1#
    • 1...Re2
      • 2.Qxe2#
    • 1...Re3
      • 2.Qxe3#
    • 1...Rxb6
      • 2.Rxb6#
      • 2.Qxb6#
    • 1...Ra7
      • 2.bxa7#
    • 1...Rc7
      • 2.bxc7#
    • 1...Rb8
      • 2.b7#
    • 1...Sg5
      • 2.Sxf8#
  • Keys
    • 1.Qa2!
      • 1...Re1+
        • 2.Rd1#
      • 1...Rxd5
        • 2.Qxd5#
      • 1...Rxb6
        • 2.Rxb6#
      • 1...Rxd7
        • 2.Rxe5#
      • 1...Bxe7
        • 2.Rd6#
      • 1...Re2
        • 2.Rd2#
        • 2.Qxe2#
      • 1...Re3
        • 2.Rd3#
      • 1...Re4
        • 2.Rd4#
      • 1...Ra7
        • 2.bxa7#
      • 1...Rc7
        • 2.bxc7#
      • 1...Rb8
        • 2.b7#
      • 1...Sg5
        • 2.Sxf8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • R(a);CHECK,OGATEB::QAR(B),XR(a)
    • R(a);OGATEB::QAR(B),XR(a)
    • R(e);OGATE::R(F)+P(G),XR(e)
    • R(e);OGATE::R(F)+P(G)
    • S(g);N_GUARD::S(I),XB(h)
  • Actual
    • Q(B);
    • Vars
      • R(a);CHECK,N_GUARD::QAB(B)+R(E)
      • R(a);OGATE,P_SPINR(a),XR(E)::QAB1(B),XR(a)
      • R(e);OGATE,P_SPINR(e),XP(G)::R(F),XR(e)
      • R(e);SBLOCK,XS(I)::QAB(B)+R(E),DCHECK,XR(a)
      • B(h);SBLOCK,XS(J)::QAB(B)+R(E),DCHECK
      • R(a);N_GUARD::QAB(B)+R(E)
      • R(e);OGATE::R(F)+P(G),XR(e)
      • R(e);OGATE::R(F)+P(G)
      • S(g);N_GUARD::S(I),XB(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).