MESON Chess Problem Database

Problem Display
PID: 76923 (Q4K2/5P1p/1P4kB/4P2n/3N1P2/8/8/2R5 w - - 0 1)

Svyatov, Gennadi

Vakhlakov, Yuri Nikolaevich

Shakhmatnaya kompozitsiya, 2000

Q4K2/5P1p/1P4kB/4P2n/3N1P2/8/8/2R5

#2

9 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Rg1+?
      • 1...Kxh6
        • 2.Sf5#
      • 1...Sg3!
    • 1.Qh1?
      • 1...Kxh6
        • 2.Rc6#
      • 1...Sg3
        • 2.Rc6#
      • 1...Sf6
        • 2.f5#
      • 1...Sg7
        • 2.Rg1#
      • 1...Sxf4!
    • 1.Qg2+?
      • 1...Kxh6
        • 2.Sf5#
        • 2.Qg5#
      • 1...Sg3!
    • 1.Qd8?
      • threat
        • 2.Qg5#
      • 1...Kxh6
        • 2.Qg5#
      • 1...Sf6!
  • Keys
    • 1.Rh1!
      • 1...Kxh6
        • 2.Qc6#
      • 1...Sxf4
        • 2.Qe4#
      • 1...Sg3
        • 2.Qc6#
      • 1...Sf6
        • 2.f5#
      • 1...Sg7
        • 2.Qg2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • K(b);P-FLIGHT,XB(F)::S(B)
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • Q(H);
      • Vars
        • K(b);P-FLIGHT,P_SPINS(a),XB(F)::R(A)
        • S(a);N_GUARD::R(A)
        • S(a);::P(C)
      • Refutation
        • S(a);XP(C)
    • Try
      • Q(H);CHECK
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • Q(H);
      • Threat
        • QAR1(H)
      • Vars
        • K(b);P-FLIGHT,XB(F)::QAB1(H)
      • Refutation
        • S(a);
  • Actual
    • R(A);
    • Vars
      • K(b);P-FLIGHT,P_SPINS(a),XB(F)::QAR(H)
      • S(a);XP(C)::QAB(H)
      • S(a);N_GUARD::QAR(H)
      • S(a);::P(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).