Problem Display
PID: 132999 (2r1N3/8/5p2/BB1p2b1/1Rbk1p2/1nN3pQ/1KP5/4R3 w - - 0 1)

Wrobel, Marian

The Field, 1959

(First published on Thu Nov 26 1959)

2r1N3/8/5p2/BB1p2b1/1Rbk1p2/1nN3pQ/1KP5/4R3

#2

9 + 9


SOLUTION


  • SOUND
  • Tries
    • 1.Re4+?
      • 1...Kc5
        • 2.Sa4#
        • 2.Qxc8#
      • 1...dxe4!
    • 1.Qf5?
      • threat
        • 2.Qxd5#
      • 1...Kc5
        • 2.Rxc4#
      • 1...Rc5
        • 2.Qd3#
      • 1...Rd8!
    • 1.Qe6?
      • threat
        • 2.Qxd5#
      • 1...Kc5
        • 2.Qb6#
      • 1...Rc5
        • 2.Se2#
      • 1...Rd8!
  • Keys
    • 1.Qd7!
      • threat
        • 2.Qxd5#
      • 1...Kc5
        • 2.Qa7#
      • 1...Rd8
        • 2.Rxc4#
      • 1...Rc5
        • 2.Re4#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);CHECK
      • Refutation
        • P(f);XR(A)
    • Try
      • Q(E);
      • Threat
        • QAR1(E),XP(f)
      • Vars
        • K(d);N_SPINB(c),P_SPINP(f),S_FLIGHT::R1(F),XB(c)
        • R(i);SBLOCK::QAR1(E)
      • Refutation
        • R(i);
    • Try
      • Q(E);
      • Threat
        • QAR1(E),XP(f)
      • Vars
        • K(d);N_SPINB(c),S_FLIGHT::QAB1(E)
        • R(i);SBLOCK::S(D)
      • Refutation
        • R(i);
  • Actual
    • Q(E);P_PINP(f)
    • Threat
      • QAR1(E),XP(f)
    • Vars
      • K(d);N_SPINB(c),N_SPINP(f),S_FLIGHT::QAB(E)
      • R(i);N_GUARD::R1(F),XB(c)
      • R(i);SBLOCK::R1(A)


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).