MESON Chess Problem Database

Problem Display
PID: 174883 (7N/8/3p3b/3R2Pk/1rQ1p2p/4N2R/4P1K1/2BB4 w - - 0 1)

Tkachenko, Sergiy Ivanovich

Vasilenko, Anatoly Grigorovich

1st HM., Albrecht-100 MT, 2017

7N/8/3p3b/3R2Pk/1rQ1p2p/4N2R/4P1K1/2BB4

#2

10 + 6

23 Die Schwalbe 2017

SOLUTION

  • SOUND
  • Tries
    • 1.Sc2?
      • threat
        • 2.e3#
      • 1...Kg4
        • 2.e3#
      • 1...e3
        • 2.Rxh4#
      • 1...Bxg5!
    • 1.Sg4?
      • threat
        • 2.Sf6#
      • 1...Kxg4
        • 2.e3#
      • 1...Bxg5
        • 2.Rxg5#
      • 1...Bg7!
    • 1.Qxe4?
      • threat
        • 2.Rxh4#
        • 2.Qg6#
        • 2.Qe8#
      • 1...Bxg5
        • 2.Rxh4#
        • 2.Qg6#
        • 2.Qh7#
      • 1...Rb7
        • 2.Rxh4#
        • 2.Qf3#
        • 2.Qg6#
        • 2.Qg4#
        • 2.Qxh4#
      • 1...Rb8
        • 2.Rxh4#
        • 2.Qf3#
        • 2.Qg6#
        • 2.Qg4#
        • 2.Qxh4#
      • 1...Rxe4!
    • 1.Qc7?
      • threat
        • 2.Qf7#
      • 1...Bxg5
        • 2.Qh7#
      • 1...Rb7!
    • 1.Qc8?
      • threat
        • 2.Qg4#
        • 2.Qe8#
      • 1...Rb7
        • 2.Qg4#
      • 1...Rb8
        • 2.Qg4#
      • 1...Bxg5!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Rxh4#
      • 1...Kg4
        • 2.Rxh4#
      • 1...Bxg5
        • 2.e3#
      • 1...e3
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Threat
        • B(B)+P(C)
      • Vars
        • K(d);N_SPINP(c),P_SPINP(b),S_FLIGHT::B(B)+P(C)
        • P(b);::R1(F),XP(c)
      • Refutation
        • B(f);P_SPINB(f),XP(I)
    • Try
      • S(E);
      • Threat
        • S(E)
      • Vars
        • K(d);N_SPINP(c),P_SPINP(b),S_FLIGHT,XS(E)::B(B)+P(C)
        • B(f);OGATE,P_SPINB(f),XP(I)::R1(H),XB(f)
      • Refutation
        • B(f);
    • Try
      • Q(G);XP(b)
      • Threat
        • DUALS(3)
      • Refutation
        • R(a);XQ(G)
    • Try
      • Q(G);
      • Threat
        • QAB(G)
      • Vars
        • B(f);OGATEB,P_SPINB(f),XP(I)::QAR2(G)
      • Refutation
        • R(a);
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);::QAB1(G)
      • Refutation
        • B(f);P_SPINB(f),XP(I)
  • Actual
    • S(E);
    • Threat
      • R1(F),XP(c)
    • Vars
      • K(d);N_SPINP(c),P_SPINP(b),S_FLIGHT::R1(F),XP(c)
      • B(f);SBLOCK,XP(I)::B(B)+P(C)
      • P(b);::S(E)
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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).