MESON Chess Problem Database

Problem Display
PID: 264965 (1br5/8/8/5N1p/P1k4K/Rb1N1Qp1/prnPpn2/1B6 w - - 0 1)

Wolfs, WJ

Probleemblad, 1949

1br5/8/8/5N1p/P1k4K/Rb1N1Qp1/prnPpn2/1B6

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Sd4
      • 2.Se3#
  • Tries
    • 1.Qe4+?
      • 1...Sd4
        • 2.Se3#
        • 2.Qxd4#
      • 1...Sxe4!
    • 1.Qc6+?
      • 1...Kxd3
        • 2.Qd5#
      • 1...Rxc6!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Qb5#
      • 1...Kxd3
        • 2.Qd5#
      • 1...Bxa4
        • 2.Rc3#
      • 1...Sxa3
        • 2.Qf7#
      • 1...Rc5
        • 2.Sxb2#
      • 1...Sd4
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD,SBLOCK::S(H)
  • Tries
    • Try
      • Q(E);CHECK
      • Refutation
        • S(e);XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • K(h);N_GUARD,P_SPINB(f),P_SPINS(c),S_FLIGHT,XS(D)::QAR2(E)
      • Refutation
        • R(k);XQ(E)
  • Actual
    • Q(E);
    • Threat
      • QAB1(E)
    • Vars
      • K(h);N_GUARD,P_SPINB(f),P_SPINS(c),S_FLIGHT,XS(D)::QAR2(E)
      • B(f);OGATE,XP(F)::R1(C)
      • S(c);XR(C)::QAB(E)
      • R(k);SBLOCK::S(D),XR(b)
      • S(c);N_GUARD,SBLOCK::S(H)
HTML5 logo

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).