MESON Chess Problem Database

Problem Display
PID: 31207 (2Q3b1/7q/5p2/n2k4/2p3R1/6Bp/2R1P2K/8 w - - 0 1)

Trcala, Stanislav

Casopis ceskoslovenskych sachistu, 1916

2Q3b1/7q/5p2/n2k4/2p3R1/6Bp/2R1P2K/8

#2

6 + 7

3437 Stanislav Trcala Sachovy odkaz 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Qh4
      • 2.Rd2#
    • 1...Qh5
      • 2.Rd2#
    • 1...Qb7
      • 2.Rd2#
    • 1...Qe7
      • 2.Rd2#
    • 1...Qf7
      • 2.Rd2#
    • 1...Qg7
      • 2.Rd2#
    • 1...Qh8
      • 2.Rd2#
    • 1...Sb3
      • 2.Qxc4#
    • 1...Sb7
      • 2.Qxc4#
    • 1...f5
      • 2.Rd2#
  • Tries
    • 1.Rcxc4?
      • threat
        • 2.Rcd4#
        • 2.Rc5#
        • 2.Rgd4#
      • 1...Sxc4
        • 2.Qxc4#
      • 1...Qd7
        • 2.Qxd7#
      • 1...Qc2
        • 2.Rcd4#
        • 2.Rgd4#
        • 2.Qd7#
        • 2.Qxg8#
      • 1...Qd3
        • 2.Rc5#
        • 2.Qd7#
        • 2.Qxg8#
      • 1...Qh4
        • 2.Rcd4#
        • 2.Rc5#
        • 2.Qf5#
        • 2.Qd7#
        • 2.Qxg8#
        • 2.e4#
      • 1...Qa7
        • 2.Qf5#
        • 2.e4#
      • 1...Qc7
        • 2.Rgd4#
      • 1...Qe7
        • 2.Rcd4#
        • 2.Rgd4#
      • 1...Sb3
        • 2.Qc6#
      • 1...Sc6
        • 2.Qxc6#
      • 1...Sb7
        • 2.Rcd4#
        • 2.Rgd4#
        • 2.Qc6#
      • 1...Qe4!
  • Keys
    • 1.Rgxc4!
      • 1...Qxc2
        • 2.Qxg8#
      • 1...Sxc4
        • 2.Qxc4#
      • 1...Qd7
        • 2.Qxd7#
      • 1...Qd3
        • 2.Qd7#
        • 2.Qxg8#
      • 1...Qe4
        • 2.Qd7#
      • 1...Qf5
        • 2.Qxf5#
      • 1...Qg6
        • 2.Qd7#
      • 1...Qh4
        • 2.Qf5#
        • 2.Qd7#
        • 2.Qxg8#
      • 1...Qh5
        • 2.Rd2#
        • 2.Qd7#
        • 2.e4#
      • 1...Qh6
        • 2.Qf5#
        • 2.Qd7#
        • 2.Qxg8#
        • 2.e4#
      • 1...Qa7
        • 2.Qf5#
        • 2.e4#
      • 1...Qb7
        • 2.Rd2#
        • 2.Qf5#
        • 2.e4#
      • 1...Qc7
        • 2.e4#
      • 1...Qe7
        • 2.Rd2#
      • 1...Qf7
        • 2.Rd2#
        • 2.Qf5#
        • 2.e4#
      • 1...Qg7
        • 2.Rd2#
        • 2.Qf5#
        • 2.e4#
      • 1...Qh8
        • 2.Rd2#
        • 2.Qf5#
        • 2.Qd7#
        • 2.e4#
      • 1...Be6
        • 2.Qc5#
      • 1...Bf7
        • 2.Qd7#
      • 1...Sb3
        • 2.Qc6#
      • 1...Sc6
        • 2.Qxc6#
      • 1...Sb7
        • 2.Qc6#
      • 1...f5
        • 2.Rd2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 10
    • REMOVED MATES = 6
  • Sets
    • Q(f);N_GUARD::R(A)
    • S(c);N_GUARD::QAB1(F),XP(b)
    • P(e);S_CUTQ(f)::R(A)
  • Tries
    • Try
      • R(A);XP(b)
      • Threat
        • DUALS(3)
      • Vars
        • S(c);OGATE,XR(A)::QAB1(F),XS(c)
        • Q(f);N_GUARD::QAR2(F),XQ(f)
        • Q(f);P_PINB(D)::R1(E)
        • S(c);N_GUARD::QAB1(F)
        • S(c);N_GUARD::QAB1(F),XS(c)
      • Refutation
        • Q(f);
  • Actual
    • R(E);XP(b)
    • Vars
      • Q(f);N_GUARD,P_PINP(B),XR(A)::QAB(F),XB(g)
      • S(c);OGATE,XR(E)::QAB1(F),XS(c)
      • Q(f);N_GUARD::QAR2(F),XQ(f)
      • Q(f);N_GUARD::QAR2(F)
      • Q(f);N_GUARD,P_PINB(D)::P(B)
      • Q(f);N_GUARD::R(A)
      • B(g);SBLOCK::QAR1(F)
      • B(g);S_CUTQ(f)::QAR2(F)
      • S(c);N_GUARD::QAB1(F)
      • S(c);N_GUARD::QAB1(F),XS(c)
      • P(e);S_CUTQ(f)::R(A)
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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).