MESON Chess Problem Database

Problem Display
PID: 206818 (8/1N1rQ3/2B3pK/r2Np3/3pk1Pp/1R6/2P3n1/4n3 w - - 0 1)

Pavlov, Mikhail Aleksandrovich

Sachova skladba, 1991

8/1N1rQ3/2B3pK/r2Np3/3pk1Pp/1R6/2P3n1/4n3

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Sc5#
    • 1...Ra2
      • 2.Sc5#
    • 1...Ra3
      • 2.Sc5#
    • 1...Ra4
      • 2.Sc5#
    • 1...Rc5
      • 2.Sxc5#
    • 1...Ra6
      • 2.Sc5#
    • 1...Ra7
      • 2.Sc5#
    • 1...Ra8
      • 2.Sc5#
    • 1...Rd6
      • 2.Sxd6#
    • 1...Rc7
      • 2.Sd6#
    • 1...Rxe7
      • 2.Sd6#
    • 1...Sf4
      • 2.Sf6#
  • Keys
    • 1.Qf7!
      • threat
        • 2.Qxg6#
      • 1...Raxd5
        • 2.Sc5#
      • 1...Rdxd5
        • 2.Sd6#
      • 1...Rxf7
        • 2.Sd6#
      • 1...d3
        • 2.Rb4#
      • 1...Rd6
        • 2.Sxd6#
      • 1...Sd3
        • 2.cxd3#
      • 1...Se3
        • 2.Sc3#
      • 1...Sf4
        • 2.Sf6#
      • 1...g5
        • 2.Qg6#
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 10
  • Sets
    • R(f);N_GUARD::S(G)
    • R(f);N_GUARD::S(G),XR(f)
    • R(i);N_GUARD::S(G),XR(i)
    • R(i);N_GUARD::S(G)
    • R(i);N_GUARD,N_SPINP(g),XQ(H)::S(G)
    • S(b);SBLOCK::B(E)+S(D),DCHECK
  • Actual
    • Q(H);N_PINP(g)
    • Threat
      • QAB(H),XP(h)
    • Vars
      • R(f);N_GUARD,P_SPINR(f),XS(D)::S(G)
      • R(i);N_GUARD,P_SPINR(i),XS(D)::S(G)
      • R(i);N_GUARD,XQ(H)::S(G)
      • P(c);OGATEB::R(B)
      • R(i);N_GUARD::S(G),XR(i)
      • S(a);OGATE::P(A),XS(a)
      • S(b);SBLOCK::B(E)+S(D),DCHECK
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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).