MESON Chess Problem Database

Problem Display
PID: 247016 (8/3BB3/8/3kNbnR/K2p1pQ1/1P2R1n1/8/3N4 w - - 0 1)

Lukashev, Viktor Sergeevich

Uralski Problemist, 1998

8/3BB3/8/3kNbnR/K2p1pQ1/1P2R1n1/8/3N4

#2

9 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Bc6#
    • 1...Bc2
      • 2.Bc6#
    • 1...Bd3
      • 2.Bc6#
    • 1...Be6
      • 2.Bc6#
    • 1...Bg6
      • 2.Bc6#
    • 1...Bxd7+
      • 2.Qxd7#
    • 1...Bh7
      • 2.Bc6#
    • 1...Se6
      • 2.Bc6#
  • Tries
    • 1.Sf3?
      • threat
        • 2.Re5#
      • 1...Bxd7+
        • 2.Qxd7#
      • 1...Sxf3
        • 2.Qg8#
      • 1...dxe3
        • 2.Sc3#
      • 1...fxe3
        • 2.Qxd4#
      • 1...Be4
        • 2.Qe6#
      • 1...S3e4
        • 2.Qxf5#
      • 1...S5e4
        • 2.Qg8#
      • 1...Sf7!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Sb4#
        • 2.Re5#
      • 1...Bxd7
        • 2.Qxd7#
      • 1...dxe3
        • 2.Sc3#
      • 1...fxe3
        • 2.Qxd4#
      • 1...Be4
        • 2.Qe6#
      • 1...S3e4
        • 2.Qxf5#
      • 1...Sf3
        • 2.Sb4#
        • 2.Qg8#
      • 1...S5e4
        • 2.Qg8#
      • 1...Sf7
        • 2.Sb4#
      • 1...d3
        • 2.Sc3#
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 7
  • Sets
    • B(e);::B(H)
    • B(e);P_PINP(B)::B(H)
    • B(e);CHECK,OGATE,XB(H)::QAR2(E),XB(e)
    • S(f);SBLOCK::B(H)
  • Tries
    • Try
      • S(F);
      • Threat
        • R1(C)
      • Vars
        • B(e);CHECK,OGATE,P_SPINS(f),XB(H)::QAR2(E),XB(e)
        • S(f);OGATE,P_SPINB(e),XS(F)::QAB(E)
        • P(b);N_GUARD,XR(C)::S(A)
        • P(c);OGATE,XR(C)::QAR1(E),XP(b)
        • B(e);OGATE,P_SPINS(f)::QAB1(E)
        • S(a);N_GUARD::QAR2(E),XB(e)
        • S(f);OGATE,P_SPINB(e)::QAB(E)
      • Refutation
        • S(f);P_SPINB(e)
  • Actual
    • S(F);
    • Threat
      • DUALS(2)
    • Vars
      • B(e);OGATE,P_PINS(F),P_SPINS(f),XB(H)::QAR2(E),XB(e)
      • P(b);N_GUARD,XR(C)::S(A)
      • P(c);OGATE,XR(C)::QAR1(E),XP(b)
      • B(e);OGATE,P_SPINS(f)::QAB1(E)
      • S(a);N_GUARD::QAR2(E),XB(e)
      • S(f);OGATE,P_SPINB(e)::QAB(E)
      • S(f);P_SPINB(e)::S(F)
HTML5 logo

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).