MESON Chess Problem Database

Problem Display
PID: 102462 (8/8/4Np2/5P2/4B3/p1p1k1p1/K1Q2rP1/1nb3Bn w - - 0 1)

Wrobel, Marian

L'Echiquier, 1930

8/8/4Np2/5P2/4B3/p1p1k1p1/K1Q2rP1/1nb3Bn

#2

7 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bb2
      • 2.Qd3#
    • 1...Bd2
      • 2.Qd3#
    • 1...Sd2
      • 2.Qd3#
  • Tries
    • 1.Bxf2+?
      • 1...gxf2
        • 2.Qd3#
      • 1...Sxf2!
  • Keys
    • 1.Bf3!
      • threat
        • 2.Qe2#
      • 1...Bd2
        • 2.Qe4#
      • 1...Sd2
        • 2.Qxc3#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • B(b);N_PINQ(C)::QAR1(C)
    • S(a);N_PINQ(C)::QAR1(C)
  • Tries
    • Try
      • B(A);CHECK,N_SPINQ(C),XR(d)
      • Vars
        • P(h);SBLOCK,XB(A)::QAR1(C)
      • Refutation
        • S(c);XB(A)
  • Actual
    • B(E);
    • Threat
      • QAR1(C)
    • Vars
      • B(b);N_PINQ(C),SBLOCK::QAR1(C)
      • S(a);N_PINQ(C)::QAR2(C),XP(f)
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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).