MESON Chess Problem Database

Problem Display
PID: 206458 (4r3/5B2/2pnN2Q/Rb1k1P2/1B1b1PP1/3R2p1/P3K1N1/5n2 w - - 0 1)

Boros, Sandor

HM., Midweek Sports Referee, 1925

4r3/5B2/2pnN2Q/Rb1k1P2/1B1b1PP1/3R2p1/P3K1N1/5n2

#2

12 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Rxd4#
    • 1...Ke4
      • 2.Sg5#
    • 1...Rxe6+
      • 2.Qxe6#
    • 1...Sc4
      • 2.Rxd4#
    • 1...Se4
      • 2.Sc7#
  • Keys
    • 1.Qh1!
      • threat
        • 2.Se3#
      • 1...Kc4
        • 2.Rxd4#
      • 1...Ke4
        • 2.Sg5#
      • 1...Se3
        • 2.Sxe3#
      • 1...Se4
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • K(e);N_PINR(D),N_SPINB(c),S_FLIGHT::R1(D),XB(c)
    • K(e);N_PINS(J),N_SPINB(c),S_FLIGHT::S(J)
    • R(h);CHECK,OGATE,P_SPINR(h),XS(J)::QAB1(K),XR(h)
    • S(g);N_PINR(D)::R1(D),XB(c)
    • S(g);N_PINS(J),SBLOCK::B(L)+S(J),DCHECK
  • Actual
    • Q(K);
    • Threat
      • QAB(K)+S(C),DCHECK
    • Vars
      • K(e);N_PINR(D),N_SPINB(c),S_FLIGHT::R1(D),XB(c)
      • K(e);N_PINS(J),N_SPINB(c),S_FLIGHT::S(J)
      • S(a);N_PINS(J)::QAB(K)+S(C),DCHECK,XS(a)
      • S(g);N_PINS(J),SBLOCK::B(L)+S(J),DCHECK
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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).