MESON Chess Problem Database

Problem Display
PID: 31177 (5B2/3Bn2b/3r1p2/7k/3ppP1r/7Q/6R1/3K4 w - - 0 1)

Trcala, Stanislav

Besedy lidu, 1901

5B2/3Bn2b/3r1p2/7k/3ppP1r/7Q/6R1/3K4

#2

6 + 8

3437 Stanislav Trcala Sachovy odkaz 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Bg6
      • 2.Bg4#
    • 1...Sg6
      • 2.Bg4#
      • 2.Qf5#
    • 1...f5
      • 2.Rg5#
  • Tries
    • 1.Be8+?
      • 1...Sg6
        • 2.Qf5#
      • 1...Bg6!
    • 1.Qf3+?
      • 1...Rg4
        • 2.Qxg4#
      • 1...exf3!
  • Keys
    • 1.Rg6!
      • threat
        • 2.Rh6#
      • 1...Kxg6
        • 2.Be8#
      • 1...Bxg6
        • 2.Bg4#
      • 1...Sxg6
        • 2.Bg4#
        • 2.Qf5#
      • 1...Sf5
        • 2.Qxf5#
      • 1...Sg8
        • 2.Qf5#
      • 1...f5
        • 2.Rg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(h);SBLOCK::B(E)
    • P(f);N_GUARD::R1(B)
  • Tries
    • Try
      • B(E);CHECK
      • Vars
        • S(g);P_SPINS(g)::QAR2(C)
      • Refutation
        • B(h);P_SPINB(h)
    • Try
      • Q(C);CHECK,N_PINR(c)
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAB1(C),XR(c)
      • Refutation
        • P(b);XQ(C)
  • Actual
    • R(B);
    • Threat
      • R1(B)
    • Vars
      • K(d);N_SPINR(c),OGATEB,S_FLIGHT,XR(B)::B(E)
      • B(h);SBLOCK,XR(B)::B(E)
      • S(g);N_GUARD::QAR2(C),XS(g)
      • S(g);N_GUARD::QAR2(C)
      • P(f);N_GUARD::R1(B)
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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).