MESON Chess Problem Database

Problem Display
PID: 54283 (B2Rq3/K2p4/PQ4p1/3Rp3/3b4/1P1k1P2/2n1N3/2B3N1 w - - 0 1)

Servais, Albert

Volksgazet, 1952

B2Rq3/K2p4/PQ4p1/3Rp3/3b4/1P1k1P2/2n1N3/2B3N1

#2

11 + 7

785 Het Belgisch Schaakbord (L'Echiquier Belge) 1952
5110 Bekroonde Problemen 2002

SOLUTION

  • SOUND
  • Tries
    • 1.Sf4+?
      • 1...Kc3
        • 2.Sge2#
      • 1...exf4!
    • 1.Rc5?
      • threat
        • 2.Be4#
        • 2.Qb5#
      • 1...Bxg1
        • 2.Qb5#
      • 1...Bxc5
        • 2.Be4#
      • 1...Qf7
        • 2.Be4#
      • 1...Qe6
        • 2.Be4#
      • 1...Qg8
        • 2.Be4#
      • 1...Sa3
        • 2.Be4#
      • 1...Se3
        • 2.Be4#
      • 1...e4
        • 2.Sf4#
        • 2.Qb5#
      • 1...d6
        • 2.Be4#
      • 1...d5!
  • Keys
    • 1.Rxd4+!
      • 1...Sxd4
        • 2.Be4#
      • 1...exd4
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(b);N_SPINB(c),P-FLIGHT::S(B)
      • Refutation
        • P(d);XS(C)
    • Try
      • R(F);N_PINB(c),N_SPINQ(H)
      • Threat
        • DUALS(2)
      • Vars
        • B(c);P_SPINP(f),XS(B)::QAB(H)
        • B(c);P_PINQ(H),P_SPINP(f),XR(F)::B(J)
        • Q(g);::B(J)
        • S(a);::B(J)
        • P(f);::B(J)
      • Refutation
        • P(f);
  • Actual
    • R(F);CHECK,N_SPINQ(H),XB(c)
    • Vars
      • S(a);XR(F)::B(J)
      • P(d);XR(F)::QAB(H)
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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).