Problem Display
PID: 266820 (K7/8/2N2R2/2pk4/P2pp3/3r4/5N2/1B3Q2 w - - 0 1)

Chivu, Nicolae

Buletin Problemistic, 1991

K7/8/2N2R2/2pk4/P2pp3/3r4/5N2/1B3Q2

#2

7 + 5


15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION


  • SOUND
  • Sets
    • 1...Rd1
      • 2.Bxe4#
    • 1...Rd2
      • 2.Bxe4#
    • 1...Ra3
      • 2.Bxe4#
    • 1...Rb3
      • 2.Bxe4#
    • 1...Rc3
      • 2.Bxe4#
    • 1...Rf3
      • 2.Bxe4#
    • 1...Rg3
      • 2.Bxe4#
    • 1...Rh3
      • 2.Bxe4#
  • Tries
    • 1.Se7+?
      • 1...Ke5
        • 2.Sg4#
      • 1...Kc4!
  • Keys
    • 1.Sxe4!
      • 1...Kc4
        • 2.Ba2#
      • 1...Kxe4
        • 2.Qf3#
      • 1...Rd1
        • 2.Rd6#
      • 1...Rd2
        • 2.Rd6#
      • 1...Ra3
        • 2.Rd6#
      • 1...Rb3
        • 2.Rd6#
      • 1...Rc3
        • 2.Rd6#
      • 1...Re3
        • 2.Rd6#
      • 1...Rf3
        • 2.Rd6#
      • 1...Rg3
        • 2.Rd6#
      • 1...Rh3
        • 2.Rd6#
      • 1...c4
        • 2.Qf5#

FEATURES


  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 8
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(a);OGATE::B(A),XP(c)
    • R(a);OGATE,P_PINP(D)::B(A),XP(c)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(e);N_GUARD,P-FLIGHT::S(C)
      • Refutation
        • K(e);P_SPINR(a),S_FLIGHT
  • Actual
    • S(C);XP(c)
    • Vars
      • K(e);N_GUARD,P_SPINR(a),S_CUTP(d),S_FLIGHT::B(A)
      • K(e);OGATEB,P_SPINR(a),S_FLIGHT,XS(C)::QAB1(B)
      • R(a);::R1(F)
      • R(a);P_PINP(D)::R1(F)
      • P(d);SBLOCK::QAR2(B)


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).