MESON Chess Problem Database

Problem Display
PID: 275992 (8/8/3Q1b2/1r1B3K/Np1kP1n1/6p1/2P1R3/8 w - - 0 1)

Sjajgarovski, Svetlin

Springaren, 1993

8/8/3Q1b2/1r1B3K/Np1kP1n1/6p1/2P1R3/8

#2

7 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd5+
      • 2.Qxd5#
    • 1...Rb7
      • 2.Ba2#
      • 2.Bb3#
      • 2.Be6#
      • 2.Bf7#
      • 2.Bg8#
    • 1...Rb8
      • 2.Ba2#
      • 2.Bb3#
      • 2.Be6#
      • 2.Bf7#
      • 2.Bg8#
    • 1...Sf2
      • 2.Qxf6#
    • 1...Sh2
      • 2.Qxf6#
    • 1...Se3
      • 2.Rd2#
      • 2.Qxf6#
    • 1...Sh6
      • 2.Qxf6#
  • Tries
    • 1.e5?
      • threat
        • 2.Re4#
      • 1...Rxd5
        • 2.Qxb4#
      • 1...Se3
        • 2.Rd2#
      • 1...Sf2!
  • Keys
    • 1.Qf4!
      • threat
        • 2.Rd2#
      • 1...Rxd5+
        • 2.e5#
      • 1...Sf2
        • 2.Qxf6#
      • 1...Se5
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(e);CHECK,OGATE,P_SPINR(e),XB(E)::QAR1(G),XR(e)
    • S(d);N_GUARD::QAB(G),XB(f)
  • Tries
    • Try
      • P(D);N_SPINB(E)
      • Threat
        • R1(B)
      • Vars
        • R(e);N_GUARD,P_PINP(D),P_SPINR(e),SBLOCK,XB(E)::QAR2(G),XP(b)
        • S(d);SBLOCK::R(B)
      • Refutation
        • S(d);
  • Actual
    • Q(G);
    • Threat
      • R(B)
    • Vars
      • R(e);CHECK,SBLOCK,XB(E)::QAR(G)+P(D)
      • S(d);N_GUARD::QAB(G),XB(f)
      • S(d);N_GUARD,N_PINB(E),SBLOCK::QAB1(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).