MESON Chess Problem Database

Problem Display
PID: 271099 (n7/1Bn1pN1p/N1P1p3/2pkp3/rR4Rq/1Pp2Pp1/1b2KB2/8 w - - 0 1)

Tura, Waldemar

Schakend Nederland, 1962

n7/1Bn1pN1p/N1P1p3/2pkp3/rR4Rq/1Pp2Pp1/1b2KB2/8

#2

10 + 13

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Sb5
      • 2.c7#
    • 1...Sxa6
      • 2.c7#
    • 1...Se8
      • 2.c7#
    • 1...Sb6
      • 2.Sxc7#
    • 1...c4
      • 2.bxc4#
    • 1...e4
      • 2.fxe4#
  • Tries
    • 1.Rb5?
      • threat
        • 2.Rxc5#
      • 1...Re4+
        • 2.fxe4#
      • 1...Sxb5
        • 2.c7#
      • 1...Sxa6
        • 2.c7#
      • 1...Rc4
        • 2.bxc4#
      • 1...Ra5
        • 2.Sb4#
      • 1...Ba3!
  • Keys
    • 1.Rg8!
      • threat
        • 2.Rd8#
      • 1...Qc4+
        • 2.bxc4#
      • 1...Qe4+
        • 2.fxe4#
      • 1...Sb5
        • 2.c7#
      • 1...Se8
        • 2.c7#
      • 1...Sb6
        • 2.Sxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • S(j);OGATE::B(I)+P(H)
    • S(j);OGATE,XS(G)::B(I)+P(H)
    • S(m);N_GUARD::S(G),XS(j)
    • P(f);OGATE::P(C),XP(f)
    • P(h);OGATE::P(D),XP(h)
  • Tries
    • Try
      • R(E);P_PINP(f)
      • Threat
        • R1(E),XP(f)
      • Vars
        • R(d);CHECK,OGATE::P(D),XR(d)
        • S(j);N_SPINP(f),OGATE,XR(E)::B(I)+P(H)
        • S(j);OGATE,XS(G)::B(I)+P(H)
        • R(d);OGATE::P(C),XR(d)
        • R(d);N_GUARD::S(G)
      • Refutation
        • B(a);
  • Actual
    • R(F);
    • Threat
      • R(F)
    • Vars
      • Q(e);CHECK,OGATE::P(C),XQ(e)
      • Q(e);CHECK,OGATE::P(D),XQ(e)
      • S(j);OGATE::B(I)+P(H)
      • S(m);N_GUARD::S(G),XS(j)
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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).