MESON Chess Problem Database

Problem Display
PID: 215655 (8/1n2n2K/p2r1pp1/8/QBNkP1R1/rp6/q1pP4/2N2B2 w - - 0 1)

Sobek, Karel

Sachova skladba, 1988

8/1n2n2K/p2r1pp1/8/QBNkP1R1/rp6/q1pP4/2N2B2

#2

9 + 11

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.e5#
    • 1...Sc5
      • 2.Bc3#
  • Tries
    • 1.Qb5?
      • threat
        • 2.Bc3#
        • 2.e5#
      • 1...Qa1
        • 2.e5#
      • 1...Qb2
        • 2.e5#
      • 1...Sc5
        • 2.Bc3#
        • 2.Bxc5#
        • 2.Qxc5#
      • 1...Sd5
        • 2.exd5#
      • 1...b2
        • 2.e5#
      • 1...f5
        • 2.Bc3#
        • 2.Qe5#
        • 2.exf5#
      • 1...axb5!
  • Keys
    • 1.Bg2!
      • threat
        • 2.e5#
      • 1...Kxc4
        • 2.Bxa3#
      • 1...Sc5
        • 2.Bc3#
      • 1...Sd5
        • 2.exd5#
      • 1...f5
        • 2.exf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(g);SBLOCK::R(H)+P(G)
    • S(j);SBLOCK::B(E)
  • Tries
    • Try
      • Q(D);
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);::R(H)+P(G)
        • S(k);OGATE::R(H)+P(G),XS(k)
        • P(d);::R(H)+P(G)
      • Refutation
        • P(f);XQ(D)
  • Actual
    • B(B);
    • Threat
      • R(H)+P(G)
    • Vars
      • K(e);OGATEB,P-FLIGHT,XS(F)::QAR(D)+B(E),XR(c)
      • S(j);SBLOCK::B(E)
      • S(k);OGATE::R(H)+P(G),XS(k)
      • P(h);OGATE::R(H)+P(G),XP(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).