Problem Display
PID: 260822 (3B2r1/8/4p1R1/3bkp2/2rR4/2p5/5K2/3Q4 w - - 0 1)

de Barbieri, Vittorio

Hampstead and Highgate Express, 1904

(First published on Sat Jun 25 1904)

3B2r1/8/4p1R1/3bkp2/2rR4/2p5/5K2/3Q4

#2

5 + 7


15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION


  • SOUND
  • Sets
    • 1...Ra4
      • 2.Bc7#
    • 1...Rb4
      • 2.Bc7#
    • 1...Rc7
      • 2.Bxc7#
    • 1...Bh1
      • 2.Bf6#
    • 1...Bg2
      • 2.Bf6#
    • 1...Bf3
      • 2.Bf6#
    • 1...Bc6
      • 2.Bf6#
      • 2.Bc7#
    • 1...Bb7
      • 2.Bf6#
    • 1...Ba8
      • 2.Bf6#
  • Tries
    • 1.Rxd5+?
      • 1...Ke4
        • 2.Qf3#
      • 1...Kf4
        • 2.Qf3#
      • 1...exd5!
  • Keys
    • 1.Qf3!
      • threat
        • 2.Qf4#
      • 1...Kxd4
        • 2.Qe3#
      • 1...Kd6
        • 2.Qxd5#
      • 1...Rxd4
        • 2.Bc7#
      • 1...Bxf3
        • 2.Bf6#
      • 1...f4
        • 2.Qxf4#
      • 1...Be4
        • 2.Bf6#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 7
  • Sets
    • R(b);N_GUARD::B(E)
    • R(b);N_GUARD::B(E),XR(b)
    • B(c);::B(E)
  • Tries
    • Try
      • R(C);CHECK,XB(c)
      • Vars
        • K(d);P-FLIGHT,S_CUTP(f)::QAB1(A)
        • K(d);S_CUTP(f),S_FLIGHT::QAR1(A)
      • Refutation
        • P(f);XR(C)
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • K(d);N_GUARD,S_CUTB(c),S_FLIGHT,XR(C)::QAB1(A)
      • K(d);P_SPINB(c),P_SPINP(f),S_FLIGHT::QAR1(A),XB(c)
      • R(b);N_GUARD,SBLOCK,XR(C)::B(E)
      • B(c);XQ(A)::B(E)
      • P(e);::QAB1(A),XP(e)
      • B(c);::B(E)


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).