MESON Chess Problem Database

Problem Display
PID: 168400 (3R4/3B4/5Q2/1pP5/1P1N1pr1/P1rk3p/2pPpn2/2BbK1bn w - - 0 1)

Petite, Efren

Shakhmatnaya kompozitsiya, 2009

3R4/3B4/5Q2/1pP5/1P1N1pr1/P1rk3p/2pPpn2/2BbK1bn

#2

10 + 12

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Bxb5#
    • 1...Ke4
      • 2.Bf5#
  • Tries
    • 1.Bxb5+?
      • 1...Ke4
        • 2.Qe7#
        • 2.Qf5#
        • 2.Qe6#
      • 1...Rc4!
    • 1.Bf5+?
      • 1...Kc4
        • 2.Qe6#
        • 2.Qf7#
      • 1...Se4!
    • 1.Qf5+?
      • 1...Kc4
        • 2.Bxb5#
        • 2.Be6#
      • 1...Kxd4
        • 2.Bxb5#
        • 2.Be6#
      • 1...Se4!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Qd4#
      • 1...Kc4
        • 2.Be6#
      • 1...Ke4
        • 2.Bc6#
      • 1...Rc4
        • 2.Bf5#
      • 1...Se4
        • 2.Bxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(h);S_FLIGHT::B(I),XP(l)
    • K(h);S_FLIGHT::B(I)
  • Tries
    • Try
      • B(I);CHECK,XP(l)
      • Refutation
        • R(g);P_SPINR(g)
    • Try
      • B(I);CHECK
      • Refutation
        • S(f);P_SPINS(f)
    • Try
      • Q(H);CHECK
      • Refutation
        • S(f);P_SPINS(f)
  • Actual
    • S(F);
    • Threat
      • QAR1(H)
    • Vars
      • K(h);S_FLIGHT::B(I)
      • R(g);SBLOCK::R(J)+B(I),DCHECK
      • S(f);SBLOCK::R(J)+B(I),DCHECK,XP(l)
HTML5 logo

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).