MESON Chess Problem Database

Problem Display
PID: 129701 (q1n2Q2/1r6/3p1P2/3Pk3/8/B3NK2/2P5/8 w - - 0 1)

Maximov, Nikolai J

Deutsche Schachzeitung, 1897

q1n2Q2/1r6/3p1P2/3Pk3/8/B3NK2/2P5/8

#2

7 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rb2
      • 2.Bxb2#
    • 1...Ra7
      • 2.Bb2#
    • 1...Rd7
      • 2.Bb2#
    • 1...Re7
      • 2.Bb2#
    • 1...Rf7
      • 2.Bb2#
    • 1...Rg7
      • 2.Bb2#
    • 1...Rh7
      • 2.Bb2#
    • 1...Sb6
      • 2.Bb2#
  • Keys
    • 1.Qg7!
      • threat
        • 2.f7#
      • 1...Kd4
        • 2.f7#
      • 1...Rxg7
        • 2.Bb2#
      • 1...Rf7
        • 2.Bb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • R(c);N_GUARD,P_PINP(E)::B(B),XR(c)
    • R(c);N_GUARD,P_PINP(E)::B(B)
    • S(e);S_CUTR(c)::B(B)
  • Actual
    • Q(G);
    • Threat
      • QAB(G)+P(F)
    • Vars
      • K(a);S_FLIGHT::QAB(G)+P(F)
      • R(c);N_GUARD,P_PINP(E),XQ(G)::B(B)
      • R(c);N_GUARD,P_PINP(E)::B(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).