MESON Chess Problem Database

Problem Display
PID: 189427 (8/Qp6/6B1/3p4/5k1p/1r3p1P/3P3K/2B5 w - - 0 1)

Rotreckl, D

Lidove noviny, 1911

8/Qp6/6B1/3p4/5k1p/1r3p1P/3P3K/2B5

#2

6 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Qe3#
    • 1...Rb2
      • 2.Qe3#
    • 1...Re3
      • 2.Qxe3#
    • 1...Rb4
      • 2.Qe3#
      • 2.d4#
    • 1...Rb5
      • 2.Qe3#
      • 2.d4#
    • 1...Rb6
      • 2.d4#
  • Keys
    • 1.Qb6!
      • threat
        • 2.Qf6#
      • 1...Ke5
        • 2.d4#
      • 1...Kg5
        • 2.d3#
      • 1...Rxb6
        • 2.d4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(a);N_GUARD::QAB1(F)
    • R(a);N_GUARD,P_PINP(B)::QAB1(F)
    • R(a);N_GUARD::QAB1(F),XR(a)
    • R(a);N_GUARD::B(A)+P(B)
  • Actual
    • Q(F);
    • Threat
      • QAR2(F)
    • Vars
      • K(c);S_FLIGHT::P(B)
      • K(c);S_FLIGHT::B(A)+P(B)
      • R(a);N_GUARD,XQ(F)::B(A)+P(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).