MESON Chess Problem Database

Problem Display
PID: 78275 (2Qq2b1/R1rr1kN1/6N1/4B1pP/2R5/3P4/8/2KB4 w - - 0 1)

Loshinski, Lev Ilich

Umnov, Evgeny Ivanovich

West Sussex Gazette, 1930

2Qq2b1/R1rr1kN1/6N1/4B1pP/2R5/3P4/8/2KB4

#2

10 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Qf6
      • 2.Qf8#
    • 1...Qe7
      • 2.Sh8#
    • 1...Qe8
      • 2.Qxe8#
    • 1...Qf8
      • 2.Qxf8#
    • 1...Rxc4+
      • 2.Qxc4#
    • 1...Rxd3
      • 2.Qe6#
    • 1...Rd4
      • 2.Qe6#
    • 1...Rd5
      • 2.Qe6#
    • 1...Re7
      • 2.Qf5#
  • Keys
    • 1.Bb3!
      • threat
        • 2.Rcxc7#
      • 1...Rxc4+
        • 2.Bxc4#
        • 2.Qxc4#
      • 1...Rxa7
        • 2.Rf4#
        • 2.Rc7#
      • 1...Rxc8
        • 2.Rc5#
        • 2.Rc6#
        • 2.Rcc7#
        • 2.Rxc8#
      • 1...Qf6
        • 2.Qf8#
      • 1...Qe7
        • 2.Sh8#
      • 1...Qe8
        • 2.Qxe8#
      • 1...Rc5
        • 2.Rxc5#
      • 1...Rc6
        • 2.Rxc6#
      • 1...Rb7
        • 2.Rf4#
      • 1...Rd5
        • 2.Qe6#
      • 1...Re7
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • Q(e);OGATE::QAR1(J)
    • Q(e);SBLOCK::S(G)
    • Q(e);OGATE::QAB1(J),XQ(e)
    • Q(e);OGATE::QAR1(J),XQ(e)
    • R(b);CHECK,OGATE,P_SPINR(c),XR(D)::QAB(J),XR(b)
    • R(c);OGATE,P_SPINR(b),XP(C)::QAB1(J)
    • R(c);OGATE,P_SPINR(b)::QAB1(J)
    • R(c);OGATE::QAR2(J)
  • Actual
    • B(B);
    • Threat
      • B(B)+R(D),XR(b)
    • Vars
      • Q(e);OGATE::QAR1(J)
      • Q(e);SBLOCK::S(G)
      • Q(e);OGATE::QAB1(J),XQ(e)
      • R(b);P_SPINR(c)::B(B)+R(D),XR(b)
      • R(b);N_PINR(D)::B(B)+R(D),DCHECK
      • R(c);OGATE,P_SPINR(b)::QAB1(J)
      • R(c);OGATE::QAR2(J)
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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).