MESON Chess Problem Database

Problem Display
PID: 201575 (6K1/8/7k/B2p1P1p/n6P/5n2/Q1p5/8 w - - 0 1)

Svoboda, Rudolf

Ceskoslovenska republika, 1922

6K1/8/7k/B2p1P1p/n6P/5n2/Q1p5/8

#2

5 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Se1
      • 2.Bd2#
    • 1...Sg1
      • 2.Bd2#
    • 1...Sd2
      • 2.Bxd2#
    • 1...Sh2
      • 2.Bd2#
    • 1...Sd4
      • 2.Bd2#
    • 1...Sxh4
      • 2.Bd2#
    • 1...Se5
      • 2.Bd2#
    • 1...d4
      • 2.Qe6#
  • Tries
    • 1.Bd2+?
      • 1...Sg5
        • 2.Bxg5#
        • 2.hxg5#
      • 1...Sxd2!
    • 1.Bb4?
      • threat
        • 2.Bf8#
      • 1...Sxh4
        • 2.Bd2#
      • 1...Sc5!
    • 1.Qa3?
      • threat
        • 2.Qd6#
        • 2.Qf8#
      • 1...Sxh4
        • 2.Bd2#
        • 2.Qc1#
        • 2.Qe3#
      • 1...Sd4
        • 2.Bd2#
        • 2.Qc1#
        • 2.Qf8#
        • 2.Qe3#
      • 1...Se5
        • 2.Bd2#
        • 2.Qc1#
        • 2.Qf8#
        • 2.Qe3#
      • 1...Sg5
        • 2.Qf8#
      • 1...Sc5!
  • Keys
    • 1.Bc3!
      • threat
        • 2.Bg7#
      • 1...Sxh4
        • 2.Bd2#
      • 1...Sxc3
        • 2.Qa6#
      • 1...Sd4
        • 2.Bd2#
      • 1...Se5
        • 2.Bd2#
      • 1...d4
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • S(b);N_GUARD::B(C)
    • S(b);N_GUARD::B(C),XS(b)
    • S(b);N_GUARD,XP(B)::B(C)
    • P(d);OGATE::QAR(A)
  • Tries
    • Try
      • B(C);CHECK
      • Refutation
        • S(b);XB(C)
    • Try
      • B(C);
      • Threat
        • B(C)
      • Vars
        • S(b);N_GUARD,XP(B)::B(C)
      • Refutation
        • S(c);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);::QAB(A)
      • Refutation
        • S(c);
  • Actual
    • B(C);
    • Threat
      • B(C)
    • Vars
      • S(b);N_GUARD,XP(B)::B(C)
      • S(c);OGATE,XB(C)::QAB1(A)
      • S(b);N_GUARD::B(C)
      • P(d);OGATE::QAR(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).