MESON Chess Problem Database

Problem Display
PID: 189792 (1bqr4/8/7Q/1N6/3NpP2/4k3/1Pp2pP1/2K2B2 w - - 0 1)

Maksimov, Nikolai Ivanovich

Tidskrift for Schack, 1911

1bqr4/8/7Q/1N6/3NpP2/4k3/1Pp2pP1/2K2B2

#2

8 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qh3
      • 2.Sxc2#
    • 1...Qg4
      • 2.Sxc2#
    • 1...Qf5
      • 2.Sxc2#
      • 2.Sxf5#
    • 1...Qa6
      • 2.Sxc2#
      • 2.Sf5#
    • 1...Qe6
      • 2.Sxc2#
    • 1...Qb7
      • 2.Sxc2#
      • 2.Sf5#
    • 1...Qd7
      • 2.Sxc2#
    • 1...Qc3
      • 2.Sf5#
    • 1...Qc4
      • 2.Sf5#
    • 1...Qc6
      • 2.Sf5#
    • 1...Qc7
      • 2.Sf5#
    • 1...Rd7
      • 2.Sf5#
    • 1...Be5
      • 2.fxe5#
    • 1...Ba7
      • 2.f5#
    • 1...Bc7
      • 2.Sxc2#
  • Keys
    • 1.Sc7!
      • threat
        • 2.Sxc2#
      • 1...Kxd4
        • 2.Qb6#
      • 1...Qxc7
        • 2.Sf5#
      • 1...Rxd4
        • 2.f5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 11
  • Sets
    • Q(f);N_GUARD::S(E),XP(a)
    • Q(f);N_GUARD::S(E)
    • R(g);S_CUTQ(f)::S(E)
    • B(e);OGATE::QAB(H)+P(F),XB(e)
    • B(e);N_GUARD::QAB(H)+P(F)
    • B(e);S_CUTQ(f)::S(E),XP(a)
  • Actual
    • S(G);
    • Threat
      • S(E),XP(a)
    • Vars
      • K(c);OGATEB,S_FLIGHT,XS(E)::QAB(H)
      • Q(f);N_GUARD,XS(G)::S(E)
      • R(g);SBLOCK,XS(E)::QAB(H)+P(F)
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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).