Problem Display
PID: 241692 (q1N5/1b1prp1n/1r1pk3/6b1/2PQP3/4pN1K/1B6/8 w - - 0 1)

Mlynka, Karol

1st Comm., Pravda (Bratislava), 2005

q1N5/1b1prp1n/1r1pk3/6b1/2PQP3/4pN1K/1B6/8

#2

7 + 11


15148 Sadier Collection 2021

SOLUTION


  • SOUND
  • Sets
    • 1...Rxb2
      • 2.Qxd6#
    • 1...Rb3
      • 2.Qxd6#
    • 1...Rb4
      • 2.Qxd6#
    • 1...Rb5
      • 2.Qxd6#
    • 1...Rc6
      • 2.Qd5#
    • 1...Bc6
      • 2.Qxd6#
    • 1...Sf6
      • 2.Sxg5#
    • 1...Sf8
      • 2.Sxg5#
    • 1...d5
      • 2.Qe5#
  • Tries
    • 1.Qf6+?
      • 1...Sxf6
        • 2.Sxg5#
      • 1...Bxf6!
  • Keys
    • 1.Qg7!
      • threat
        • 2.Sd4#
      • 1...Bf6
        • 2.Qg4#
      • 1...Sf6
        • 2.Sxg5#
      • 1...f6
        • 2.Qxe7#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • R(c);N_GUARD,XB(A)::QAR1(E),XP(d)
    • R(c);N_GUARD::QAR1(E),XP(d)
    • R(c);S_CUTB(f)::QAB1(E)
    • B(f);S_CUTR(c)::QAR1(E),XP(d)
    • S(j);N_GUARD::S(B),XB(b)
    • P(d);N_GUARD::QAR1(E)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • S(j);XQ(E)::S(B),XB(b)
      • Refutation
        • B(b);XQ(E)
  • Actual
    • Q(E);
    • Threat
      • S(B)
    • Vars
      • B(b);OGATE::QAB(E)
      • S(j);N_GUARD::S(B),XB(b)
      • P(i);OGATE::QAR1(E),XR(h)


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).