MESON Chess Problem Database

Problem Display
PID: 44686 (3n4/Q1R1R3/rq1N1K2/5p2/r2k1P2/B2N1B2/1pP5/b7 w - - 0 1)

Servais, Albert

de Val, Leon

Het Belgisch Schaakbord (L'Echiquier Belge), 1948

3n4/Q1R1R3/rq1N1K2/5p2/r2k1P2/B2N1B2/1pP5/b7

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qc5
      • 2.Qxc5#
    • 1...Rxa3
      • 2.Rc4#
    • 1...Rc4
      • 2.Rxc4#
    • 1...R4a5
      • 2.Rc4#
    • 1...Se6
      • 2.Sxf5#
  • Tries
    • 1.Bc5+?
      • 1...Qxc5
        • 2.Qxc5#
      • 1...Kc3!
    • 1.Re4+?
      • 1...Kd5
        • 2.Rxa4#
        • 2.Rec4#
      • 1...fxe4!
  • Keys
    • 1.Sxb2!
      • threat
        • 2.c3#
      • 1...Rxa3
        • 2.Rc4#
      • 1...Bxb2
        • 2.Bxb2#
      • 1...Qc5
        • 2.Qxc5#
      • 1...Rc4
        • 2.Rxc4#
      • 1...Sc6
        • 2.Sb5#
      • 1...Se6
        • 2.Sxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(g);OGATE::QAB1(H),XQ(g)
    • R(c);N_GUARD,XB(B)::R1(I)
    • R(c);N_GUARD::R1(I),XR(c)
    • R(c);N_GUARD::R1(I)
    • S(h);N_PINS(F)::S(F),XP(e)
  • Tries
    • Try
      • B(B);CHECK,N_PINQ(g)
      • Vars
        • Q(g);OGATE,P_SPINQ(g),XB(B)::QAB1(H),XQ(g)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • R(J);CHECK
      • Refutation
        • P(e);XR(J)
  • Actual
    • S(C);XP(b)
    • Threat
      • P(A)
    • Vars
      • R(c);N_GUARD,XB(B)::R1(I)
      • B(a);OGATE,XS(C)::B(B),XB(a)
      • Q(g);OGATE::QAB1(H),XQ(g)
      • R(c);N_GUARD::R1(I),XR(c)
      • S(h);N_PINS(F)::S(F)
      • S(h);N_PINS(F)::S(F),XP(e)
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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).