MESON Chess Problem Database

Problem Display
PID: 168320 (2b3Bn/2pn1r2/2R5/1ppkbp1R/2NN4/1PP1PK2/r1QP4/8 w - - 0 1)

Petite, Efren

1st HM., Lipskie Centrum Kultury, 1999

2b3Bn/2pn1r2/2R5/1ppkbp1R/2NN4/1PP1PK2/r1QP4/8

#2

11 + 11

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bh2
      • 2.Qe4#
      • 2.e4#
    • 1...Bg3
      • 2.Qe4#
      • 2.e4#
    • 1...Bxd4
      • 2.Qe4#
    • 1...Bf4
      • 2.Qe4#
      • 2.e4#
    • 1...Bd6
      • 2.Qe4#
      • 2.e4#
    • 1...Bf6
      • 2.Qe4#
      • 2.e4#
    • 1...Bg7
      • 2.Qe4#
      • 2.e4#
    • 1...Sg6
      • 2.Bxf7#
    • 1...f4
      • 2.Qe4#
      • 2.e4#
  • Tries
    • 1.Sxf5?
      • threat
        • 2.Qe4#
      • 1...Kxc6
        • 2.Qe4#
      • 1...Sf6
        • 2.Se7#
      • 1...Rxc2!
    • 1.Rd6+?
      • 1...Bxd6
        • 2.Qe4#
        • 2.e4#
      • 1...cxd6!
    • 1.Qxf5?
      • threat
        • 2.e4#
      • 1...Sf6
        • 2.Qxe5#
      • 1...cxd4!
  • Keys
    • 1.Rxf5!
      • threat
        • 2.Qe4#
        • 2.e4#
      • 1...Rxc2
        • 2.e4#
      • 1...cxd4
        • 2.Qe4#
      • 1...Sf6
        • 2.Rxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • B(e);P_SPINP(f),XS(H)::QAB1(A)
    • S(k);N_GUARD::B(K),XR(i)
  • Tries
    • Try
      • S(H);P_SPINS(H),XP(f)
      • Threat
        • QAB1(A)
      • Vars
        • K(d);N_SPINR(i),S_FLIGHT,XR(J)::QAB(A)
        • S(h);N_PINS(H)::S(H)
      • Refutation
        • R(a);XQ(A)
    • Try
      • R(J);CHECK
      • Refutation
        • P(g);XR(J)
    • Try
      • Q(A);P_PINB(e),P_SPINQ(A),XP(f)
      • Threat
        • P(E)
      • Vars
        • S(h);N_PINQ(A)::QAR1(A),XB(e)
      • Refutation
        • P(c);XS(H)
  • Actual
    • R(I);P_PINB(e),P_SPINR(I),XP(f)
    • Threat
      • DUALS(2)
    • Vars
      • R(a);XQ(A)::P(E)
      • P(c);XS(H)::QAB1(A)
      • S(h);N_PINR(I)::R1(I),XB(e)
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).