MESON Chess Problem Database

Problem Display
PID: 60192 (KQ6/8/p1N1P1B1/r3p3/Rbb2k2/1p1rpN1P/3pP2P/2q5 w - - 0 1)

Schirdewan, Udo

3rd HM., Brisbane Courier, 1932

KQ6/8/p1N1P1B1/r3p3/Rbb2k2/1p1rpN1P/3pP2P/2q5

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.Qf8#
    • 1...Rxa4
      • 2.Qxe5#
    • 1...Rc5
      • 2.Qf8#
    • 1...Bc3
      • 2.Qf8#
    • 1...Bc5
      • 2.Qxe5#
    • 1...Bf8
      • 2.Qxf8#
    • 1...Bb5
      • 2.Qxe5#
      • 2.Qf8#
    • 1...Bd5
      • 2.Qxe5#
      • 2.Qf8#
  • Keys
    • 1.Scxe5!
      • threat
        • 2.Sxd3#
      • 1...Bd5+
        • 2.Sc6#
      • 1...Rxe5
        • 2.Qxe5#
      • 1...Rc3
        • 2.Sd3#
      • 1...Rd4
        • 2.Sd3#
      • 1...Rdd5
        • 2.Sd3#
      • 1...Rd6
        • 2.Qf8#
      • 1...Rd7
        • 2.Sd3#
      • 1...Rd8
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 5
  • Sets
    • R(d);N_SPINP(j),S_CUTB(f)::QAR(J)
    • R(i);N_GUARD,XR(E)::QAB1(J),XP(j)
    • R(i);S_CUTB(f)::QAR(J)
    • B(f);N_GUARD,P_SPINB(g)::QAR(J)
    • B(f);P_SPINB(g),S_CUTR(i)::QAB1(J),XP(j)
    • B(f);N_GUARD,P_SPINB(g)::QAR(J),XB(f)
  • Actual
    • S(F);XP(j)
    • Threat
      • QAB(J)+S(F),DCHECK,XR(d)
    • Vars
      • B(g);CHECK,P_SPINB(f),S_CUTR(d),S_CUTR(i)::QAB(J)+S(F)
      • R(i);OGATE,P_SPINR(i),XS(F)::QAB1(J),XR(i)
      • R(d);::QAB(J)+S(F),DCHECK
      • R(d);S_CUTB(f)::QAR(J)
      • R(d);P_PINQ(J)::QAB(J)+S(F),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).