MESON Chess Problem Database

Problem Display
PID: 71103 (2K5/3Np3/2RP2nQ/pB1k4/Rb2b1P1/4pp2/2P1N3/6B1 w - - 0 1)

Seilberger, Johann Joseph Petrus Adrianus

Zaldo Zapirain, Juan

Arbejder-Skak, 1952

2K5/3Np3/2RP2nQ/pB1k4/Rb2b1P1/4pp2/2P1N3/6B1

#2

11 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sf4
      • 2.c4#
    • 1...Sh4
      • 2.c4#
    • 1...Se5
      • 2.Sb6#
    • 1...Sf8
      • 2.c4#
    • 1...Sh8
      • 2.c4#
    • 1...e6
      • 2.c4#
  • Tries
    • 1.Sf4+?
      • 1...Kd4
        • 2.Rc4#
        • 2.c3#
      • 1...Sxf4!
  • Keys
    • 1.Qxe3!
      • threat
        • 2.Qb3#
      • 1...Ke6
        • 2.Bc4#
      • 1...Bxc2
        • 2.Sb6#
      • 1...Bc3
        • 2.Qxe4#
      • 1...Bd3
        • 2.Sb6#
      • 1...Bf5
        • 2.c4#
      • 1...Se5
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 5
  • Sets
    • S(g);::P(B)
    • S(g);SBLOCK::S(J)
    • P(h);SBLOCK::P(B)
  • Tries
    • Try
      • S(C);CHECK
      • Refutation
        • S(g);XS(C)
  • Actual
    • Q(I);XP(a)
    • Threat
      • QAB(I)
    • Vars
      • K(f);P_SPINB(d),S_FLIGHT::B(F)
      • B(d);XP(B)::S(J)
      • B(c);::QAB1(I),XB(d)
      • B(d);::S(J)
      • B(d);P_PINS(J)::P(B)
      • S(g);N_GUARD::S(C)
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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).