MESON Chess Problem Database

Problem Display
PID: 256508 (5Q2/4R3/4p3/2BNp3/2Rpk3/3p1pP1/1K6/5B2 w - - 0 1)

von Sponer, Andor

Wiener Schachzeitung, 1887

5Q2/4R3/4p3/2BNp3/2Rpk3/3p1pP1/1K6/5B2

#2

8 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...f2
      • 2.Bg2#
    • 1...exd5
      • 2.Qf4#
  • Tries
    • 1.Kb3?
      • 1...Kxd5
        • 2.Qa8#
      • 1...exd5
        • 2.Qf4#
      • 1...f2
        • 2.Bg2#
      • 1...d2!
    • 1.Bxd3+?
      • 1...Kxd5
        • 2.Qa8#
      • 1...Kxd3!
    • 1.Rc1?
      • 1...Kxd5
        • 2.Qa8#
      • 1...exd5
        • 2.Re1#
        • 2.Qf4#
      • 1...f2
        • 2.Bg2#
      • 1...d2!
  • Keys
    • 1.Rc3!
      • 1...dxc3+
        • 2.Sxc3#
      • 1...Kxd5
        • 2.Qa8#
      • 1...exd5
        • 2.Qf4#
      • 1...d2
        • 2.Qxf3#
      • 1...f2
        • 2.Bg2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATEB::B(A)
    • P(f);SBLOCK,S_CUTP(e),XS(F)::QAR1(H)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(d);N_SPINP(c),OGATEB,S_FLIGHT,XS(F)::QAB(H)
        • P(f);SBLOCK,S_CUTP(e),XS(F)::QAR1(H)
        • P(b);OGATEB::B(A)
      • Refutation
        • P(a);
    • Try
      • B(A);CHECK,XP(a)
      • Vars
        • K(d);N_GUARD,N_SPINP(c),S_FLIGHT,XS(F)::QAB(H)
      • Refutation
        • K(d);N_SPINP(c),S_FLIGHT,XB(A)
    • Try
      • R(D);N_PINP(c)
      • Vars
        • K(d);OGATEB,S_FLIGHT,XS(F)::QAB(H)
        • P(b);OGATEB::B(A)
      • Refutation
        • P(a);
  • Actual
    • R(D);N_PINP(c)
    • Vars
      • P(c);CHECK,XR(D)::S(F),XP(c)
      • K(d);OGATEB,S_FLIGHT,XS(F)::QAB(H)
      • P(f);P_SPINP(e),SBLOCK,XS(F)::QAR1(H)
      • P(a);::QAB1(H),XP(b)
      • P(b);OGATEB::B(A)
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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).