MESON Chess Problem Database

Problem Display
PID: 19330 (8/8/8/1p6/k7/pN3Rp1/pp1r2p1/qrb1Q1K1 w - - 0 1)

Mikan, Ilja

Cesky denik, 1941

8/8/8/1p6/k7/pN3Rp1/pp1r2p1/qrb1Q1K1

#2

4 + 11

5505 Dobrodruzstvi 64 poli 1973

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Sc5#
    • 1...Rc2
      • 2.Qa5#
    • 1...Re2
      • 2.Sc5#
      • 2.Qa5#
    • 1...Rf2
      • 2.Sc5#
      • 2.Qa5#
    • 1...Rd3
      • 2.Sc5#
    • 1...Rd4
      • 2.Sc5#
      • 2.Qa5#
    • 1...Rd5
      • 2.Qa5#
    • 1...Rd6
      • 2.Sc5#
      • 2.Qa5#
    • 1...Rd7
      • 2.Sc5#
      • 2.Qa5#
    • 1...Rd8
      • 2.Sc5#
      • 2.Qa5#
  • Tries
    • 1.Qxd2?
      • threat
        • 2.Sc5#
        • 2.Qa5#
      • 1...b4
        • 2.Qd7#
      • 1...Bxd2+!
    • 1.Qe4+?
      • 1...b4
        • 2.Qc6#
      • 1...Rd4!
  • Keys
    • 1.Rd3!
      • 1...Kb4
        • 2.Qe4#
      • 1...Rxd3
        • 2.Sc5#
      • 1...Rd1
        • 2.Sc5#
      • 1...Rc2
        • 2.Qa5#
      • 1...Re2
        • 2.Sc5#
        • 2.Qa5#
      • 1...Rf2
        • 2.Sc5#
        • 2.Qa5#
      • 1...b4
        • 2.Qe8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(f);P_PINQ(A)::S(C)
    • R(f);OGATE::QAR1(A)
    • R(f);::S(C)
  • Tries
    • Try
      • Q(A);XR(f)
      • Threat
        • DUALS(2)
      • Vars
        • P(k);OGATEB,SBLOCK::QAB(A)
      • Refutation
        • B(c);CHECK,XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • P(k);OGATEB,P_SPINP(k),SBLOCK::QAB(A)
      • Refutation
        • R(f);P_SPINR(f)
  • Actual
    • R(D);
    • Vars
      • K(j);P-FLIGHT,P_SPINR(f)::QAR(A)
      • R(f);XR(D)::S(C)
      • R(f);P_PINQ(A)::S(C)
      • R(f);OGATE::QAR1(A)
      • P(k);OGATEB,SBLOCK::QAB(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).