MESON Chess Problem Database

Problem Display
PID: 173751 (2B1r2b/1Q6/K3p2r/3P1P1p/1p1BkN1R/2R2N2/8/8 w - - 0 1)

Boros, Sandor

L'Echiquier, 1928

2B1r2b/1Q6/K3p2r/3P1P1p/1p1BkN1R/2R2N2/8/8

#2

10 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...exd5+
      • 2.Sg6#
    • 1...exf5+
      • 2.d6#
    • 1...e5+
      • 2.Sg6#
      • 2.d6#
  • Tries
    • 1.Qb5?
      • threat
        • 2.Qd3#
      • 1...exd5+
        • 2.Sg6#
      • 1...e5+
        • 2.Sg6#
      • 1...Kxf5
        • 2.Qd3#
      • 1...exf5+!
  • Keys
    • 1.Qxb4!
      • threat
        • 2.Qb1#
      • 1...exd5+
        • 2.Sg6#
      • 1...exf5+
        • 2.Bf6#
      • 1...e5+
        • 2.Bb6#
      • 1...Kxf5
        • 2.Qb1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(d);CHECK,P_SPINP(d),XP(F)::R(E)+S(D)
    • P(d);CHECK,XP(G)::QAB(I)+P(F)
  • Tries
    • Try
      • Q(I);
      • Threat
        • QAB1(I)
      • Vars
        • P(d);CHECK,XP(F)::R(E)+S(D)
        • P(d);CHECK::R(E)+S(D)
        • K(b);P_SPINP(d),S_FLIGHT,XP(G)::QAB(I)
      • Refutation
        • P(d);CHECK,XP(G)
  • Actual
    • Q(I);XP(a)
    • Threat
      • QAB(I)
    • Vars
      • P(d);CHECK,SBLOCK,XP(F)::R(E)+S(D)
      • P(d);CHECK,XP(G)::QAR(I)+B(C)
      • P(d);CHECK,S_CUTB(g)::QAR(I)+B(C)
      • K(b);P_SPINP(d),S_FLIGHT,XP(G)::QAB(I)
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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).