MESON Chess Problem Database

Problem Display
PID: 24875 (8/1Q3b2/8/2p4p/p3R1Nr/3k3p/1n2N3/4K3 w - - 0 1)

Kosek, Wojtech

Casopis ceskoslovenskych sachistu, 0000

8/1Q3b2/8/2p4p/p3R1Nr/3k3p/1n2N3/4K3

#2

5 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Qb1#
    • 1...Sc4
      • 2.Qb1#
  • Tries
    • 1.Re3+?
      • 1...Kc4
        • 2.Se5#
        • 2.Rc3#
      • 1...Kc2!
    • 1.Qxb2?
      • threat
        • 2.Sf2#
        • 2.Qb1#
      • 1...Rxg4
        • 2.Qb1#
      • 1...hxg4
        • 2.Qb1#
      • 1...Ba2
        • 2.Sf2#
      • 1...Bb3
        • 2.Sf2#
      • 1...Kxe4!
  • Keys
    • 1.Rc4!
      • threat
        • 2.Rc3#
        • 2.Qe4#
      • 1...Kxc4
        • 2.Se5#
      • 1...Rxg4
        • 2.Rc3#
      • 1...Bxc4
        • 2.Qh7#
      • 1...Sxc4
        • 2.Qb1#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Bg6
        • 2.Rc3#
        • 2.Qd5#
      • 1...Sd1
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(a);OGATE::QAB(E)
  • Tries
    • Try
      • R(C);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);XS(a)
      • Threat
        • DUALS(2)
      • Vars
        • R(e);XS(D)::QAB(E)
        • P(g);XS(D)::QAB(E)
        • B(h);::S(D)
      • Refutation
        • K(b);S_FLIGHT,XR(C)
  • Actual
    • R(C);
    • Threat
      • DUALS(2)
    • Vars
      • K(b);S_FLIGHT,XR(C)::S(D)
      • R(e);XS(D)::R1(C)
      • B(h);OGATE,SBLOCK,XR(C)::QAB(E)
      • S(a);OGATE,SBLOCK,XR(C)::QAB(E)
      • B(h);N_GUARD::QAR2(E),XB(h)
      • S(a);::QAB1(E)
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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).