MESON Chess Problem Database

Problem Display
PID: 15560 (N2B4/8/p7/1kNPp2b/pr4p1/qnQ3K1/BR1p4/8 w - - 0 1)

Golubenko, Vladimir Aleksandrovich

Rychkov, Vladimir Nikolaevich

Sp. Prize, Shakhmaty v SSSR, 1985

N2B4/8/p7/1kNPp2b/pr4p1/qnQ3K1/BR1p4/8

#2

8 + 10

4001 Izbrannie Shakmatny Zadachi Vladimira Rychkova 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Qa5#
    • 1...Sxc5
      • 2.Bc4#
  • Tries
    • 1.Sd3?
      • threat
        • 2.Qc6#
      • 1...Rc4
        • 2.Qa5#
      • 1...Sd4
        • 2.Bc4#
        • 2.Qc4#
        • 2.Qc5#
      • 1...Sa5
        • 2.Qc5#
      • 1...Sc5
        • 2.Bc4#
        • 2.Qc4#
        • 2.Qxc5#
      • 1...Be8!
    • 1.Se6?
      • threat
        • 2.Qc6#
      • 1...Rc4
        • 2.Qa5#
      • 1...Rd4
        • 2.Sec7#
      • 1...Re4
        • 2.Sec7#
      • 1...Rf4
        • 2.Sec7#
      • 1...Sa1
        • 2.Bc4#
      • 1...Sc1
        • 2.Bc4#
      • 1...Sd4
        • 2.Bc4#
      • 1...Sa5
        • 2.Sec7#
      • 1...Sc5
        • 2.Bc4#
      • 1...Be8!
    • 1.Qd3+?
      • 1...Kxc5
        • 2.Be7#
      • 1...Rc4!
  • Keys
    • 1.Sd7!
      • threat
        • 2.Qc6#
      • 1...Rc4
        • 2.Qa5#
      • 1...Rd4
        • 2.Sc7#
      • 1...Re4
        • 2.Sc7#
      • 1...Rf4
        • 2.Sc7#
      • 1...Sa1
        • 2.Bc4#
      • 1...Sc1
        • 2.Bc4#
      • 1...Sd4
        • 2.Bc4#
      • 1...Sa5
        • 2.Sc7#
      • 1...Sc5
        • 2.Bc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • R(e);OGATE,P_SPINS(c),SBLOCK::QAR1(C)
    • S(c);OGATE,P_PINQ(C),P_SPINR(e),SBLOCK,XS(E)::B(A)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAB1(C)
      • Vars
        • R(e);OGATE,P_SPINS(c),SBLOCK::QAR1(C)
        • S(c);N_GUARD,P_SPINR(e)::QAR1(C)
      • Refutation
        • B(i);
    • Try
      • S(E);
      • Threat
        • QAB1(C)
      • Vars
        • R(e);OGATE,P_SPINS(c),SBLOCK::QAR1(C)
        • R(e);P_SPINS(c)::S(E)
        • S(c);OGATE,P_PINQ(C),P_SPINR(e)::B(A)
        • S(c);P_PINQ(C),P_SPINR(e),SBLOCK::S(E)
      • Refutation
        • B(i);
    • Try
      • Q(C);CHECK
      • Vars
        • K(g);P-FLIGHT,XS(E)::B(H)
      • Refutation
        • R(e);P_SPINR(e),P_SPINS(c)
  • Actual
    • S(E);
    • Threat
      • QAB1(C)
    • Vars
      • R(e);OGATE,P_SPINS(c),SBLOCK::QAR1(C)
      • R(e);P_SPINS(c)::S(G)
      • S(c);OGATE,P_PINQ(C),P_SPINR(e)::B(A)
      • S(c);P_PINQ(C),P_SPINR(e),SBLOCK::S(G)
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).