MESON Chess Problem Database

Problem Display
PID: 129890 (8/5p2/8/1p3K2/2p5/kPQ5/1np5/1bB5 w - - 0 1)

Mikan, Ilja

Mlada Fronta, 1947

8/5p2/8/1p3K2/2p5/kPQ5/1np5/1bB5

#2

4 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ka2
      • 2.Qxb2#
    • 1...Ba2
      • 2.Bxb2#
    • 1...cxb3
      • 2.Qa5#
    • 1...b4
      • 2.Qxb2#
  • Tries
    • 1.bxc4+?
      • 1...Ka2
        • 2.Qxb2#
      • 1...Ka4!
    • 1.b4+?
      • 1...Ka2
        • 2.Qxb2#
      • 1...Ka4!
  • Keys
    • 1.Kf6!
      • 1...Ka2
        • 2.Qxb2#
      • 1...cxb3
        • 2.Qa5#
      • 1...Ba2
        • 2.Bxb2#
      • 1...b4
        • 2.Qxb2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(d);N_SPINS(b),P-FLIGHT::QAR1(C),XS(b)
    • B(a);SBLOCK::B(A),XS(b)
    • P(e);P_SPINP(e),SBLOCK,XP(B)::QAR2(C)
    • P(f);SBLOCK::QAB1(C),XS(b)
  • Tries
    • Try
      • P(B);CHECK,XP(e)
      • Vars
        • K(d);N_SPINS(b),P-FLIGHT::QAR1(C),XS(b)
      • Refutation
        • K(d);N_SPINS(b),P-FLIGHT
    • Try
      • P(B);CHECK
      • Vars
        • K(d);N_SPINS(b),P-FLIGHT::QAR1(C),XS(b)
      • Refutation
        • K(d);N_SPINS(b),P-FLIGHT
  • Actual
    • K(D);P-FLIGHT
    • Vars
      • K(d);N_SPINS(b),P-FLIGHT::QAR1(C),XS(b)
      • P(e);P_SPINP(e),SBLOCK,XP(B)::QAR2(C)
      • B(a);SBLOCK::B(A),XS(b)
      • P(f);SBLOCK::QAB1(C),XS(b)
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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).