MESON Chess Problem Database

Problem Display
PID: 168361 (4BK2/5NNP/3p1kpp/Rr4p1/1p3P1B/1bR1p3/1Q4r1/8 w - - 0 1)

Petite, Efren

Sachove umeni (Ceskoslovensky sach), 2000

4BK2/5NNP/3p1kpp/Rr4p1/1p3P1B/1bR1p3/1Q4r1/8

#2

10 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rg1
      • 2.Rc5#
    • 1...Rg3
      • 2.Rc5#
    • 1...Rg4
      • 2.Rc5#
    • 1...Rb6
      • 2.Rc2#
    • 1...Rb7
      • 2.Rc2#
    • 1...Rb8
      • 2.Rc2#
    • 1...Bc2
      • 2.Rc5#
    • 1...Bd5
      • 2.Rc2#
    • 1...e2
      • 2.Rc5#
    • 1...d5
      • 2.Rc6#
  • Tries
    • 1.Sxg5?
      • threat
        • 2.Se4#
      • 1...Rgxg5
        • 2.Rc5#
      • 1...Rbxg5
        • 2.Rc2#
      • 1...hxg5!
    • 1.Rc6+?
      • 1...Re5
        • 2.Qxe5#
        • 2.fxe5#
      • 1...Rxb2!
    • 1.fxg5+?
      • 1...Rgxg5
        • 2.Rc5#
      • 1...Rbxg5
        • 2.Rc2#
      • 1...hxg5!
  • Keys
    • 1.Sxd6!
      • threat
        • 2.Se4#
      • 1...Re5
        • 2.fxe5#
      • 1...Bc2
        • 2.Rc5#
      • 1...Bd5
        • 2.Rc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 8
  • Sets
    • R(a);N_GUARD::QAB(A)+R(B)
    • R(e);N_GUARD::QAB(A)+R(B)
    • R(e);N_GUARD,P_PINB(I)::QAB(A)+R(B)
    • B(b);S_CUTR(a)::QAB(A)+R(B)
    • B(b);S_CUTR(e)::QAB(A)+R(B)
    • P(c);S_CUTR(a)::QAB(A)+R(B)
    • P(g);::QAB(A)+R(B),DCHECK
  • Tries
    • Try
      • S(F);XP(f)
      • Threat
        • B(D)+S(F),DCHECK
      • Vars
        • R(a);N_GUARD,P_SPINR(a),XS(F)::QAB(A)+R(B)
        • R(e);N_GUARD,P_SPINR(e),XS(F)::QAB(A)+R(B)
      • Refutation
        • P(j);P_SPINP(j),XS(F)
    • Try
      • R(B);CHECK
      • Refutation
        • R(a);XQ(A)
    • Try
      • P(C);CHECK,XP(f)
      • Vars
        • R(a);P_SPINR(a),XP(C)::QAB(A)+R(B)
        • R(e);P_SPINR(e),XP(C)::QAB(A)+R(B)
      • Refutation
        • P(j);P_SPINP(j),XP(C)
  • Actual
    • S(F);XP(g)
    • Threat
      • S(F)
    • Vars
      • R(e);OGATE::P(C),XR(e)
      • B(b);S_CUTR(a)::QAB(A)+R(B)
      • B(b);S_CUTR(e)::QAB(A)+R(B)
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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).