MESON Chess Problem Database

Problem Display
PID: 187984 (8/B2B3p/3P3Q/3k2n1/4R1N1/K2p1n2/5p2/8 w - - 0 1)

Kotrc, Jan

Deutsche Arbeiter Schachzeitung, 1910

8/B2B3p/3P3Q/3k2n1/4R1N1/K2p1n2/5p2/8

#2

7 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Se1
      • 2.Rd4#
    • 1...Sg1
      • 2.Rd4#
    • 1...Sd2
      • 2.Rd4#
    • 1...Sh2
      • 2.Rd4#
    • 1...Sd4
      • 2.Rxd4#
    • 1...Sh4
      • 2.Rd4#
    • 1...Se5
      • 2.Rd4#
    • 1...Sh3
      • 2.Qe6#
    • 1...Sxe4
      • 2.Qe6#
    • 1...Se6
      • 2.Qxe6#
    • 1...Sf7
      • 2.Qe6#
  • Tries
    • 1.Qxg5+?
      • 1...Kxe4
        • 2.Sxf2#
        • 2.Sf6#
        • 2.Bc6#
        • 2.Qf5#
      • 1...Se5
        • 2.Rd4#
        • 2.Qxe5#
      • 1...Sxg5
        • 2.Rd4#
      • 1...Kxd6!
    • 1.Qf8?
      • threat
        • 2.Sf6#
      • 1...Kxe4
        • 2.Bc6#
        • 2.Qf5#
      • 1...Sd4
        • 2.Rxd4#
      • 1...Sxe4!
  • Keys
    • 1.Qh2!
      • threat
        • 2.Sf6#
      • 1...Kxe4
        • 2.Sf6#
      • 1...Sxh2
        • 2.Rd4#
      • 1...Sxe4
        • 2.Se3#
      • 1...Sd4
        • 2.Rxd4#
      • 1...Se5
        • 2.Rd4#
        • 2.Qxe5#

This is a version of 119864

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 8
  • Sets
    • S(c);N_GUARD::R1(B)
    • S(c);N_GUARD::R1(B),XS(c)
    • S(e);N_GUARD::QAB1(E)
    • S(e);N_GUARD,XR(B)::QAB1(E)
    • S(e);N_GUARD::QAB1(E),XS(e)
  • Tries
    • Try
      • Q(E);CHECK,XS(e)
      • Vars
        • S(c);XQ(E)::R1(B)
      • Refutation
        • K(d);P-FLIGHT,XP(D)
    • Try
      • Q(E);
      • Threat
        • S(C)
      • Vars
        • S(c);N_GUARD::R1(B),XS(c)
      • Refutation
        • S(e);XR(B)
  • Actual
    • Q(E);
    • Threat
      • S(C)
    • Vars
      • K(d);S_FLIGHT,XR(B)::S(C)
      • S(c);N_GUARD,XQ(E)::R1(B)
      • S(e);SBLOCK,XR(B)::S(C)
      • S(c);N_GUARD::R1(B),XS(c)
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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).