MESON Chess Problem Database

Problem Display
PID: 157295 (4N2N/5P2/1B2p1p1/R1rnkqnR/5p2/2Pp4/4b1Bp/1Q5K w - - 0 1)

Petite, Efren

Problemas, 1953

4N2N/5P2/1B2p1p1/R1rnkqnR/5p2/2Pp4/4b1Bp/1Q5K

#2

10 + 11

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa5
      • 2.Bd4#
    • 1...Rb5
      • 2.Bd4#
    • 1...Rc6
      • 2.Bd4#
    • 1...Rc7
      • 2.Bd4#
      • 2.Bxc7#
    • 1...Rc8
      • 2.Bd4#
    • 1...Se3
      • 2.Bc7#
    • 1...Sb4
      • 2.Bc7#
    • 1...Sf6
      • 2.Bc7#
    • 1...Sc7
      • 2.Bxc7#
    • 1...Se7
      • 2.Bc7#
    • 1...Sh3
      • 2.Sxg6#
    • 1...Se4
      • 2.Sxg6#
    • 1...Sxf7
      • 2.Sxg6#
      • 2.Sxf7#
    • 1...Sh7
      • 2.Sxg6#
  • Keys
    • 1.Qb4!
      • threat
        • 2.Qd4#
      • 1...Qxf7
        • 2.Qe4#
      • 1...Sxc3
        • 2.Bc7#
        • 2.Qxc3#
      • 1...Sxb4
        • 2.Bc7#
      • 1...Qh3
        • 2.Qe4#
      • 1...Qe4
        • 2.Qxe4#
      • 1...Qg4
        • 2.Qe4#
      • 1...Qf6
        • 2.Qe4#
      • 1...Rc4
        • 2.Qd6#
      • 1...Sf3
        • 2.Sxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 11
  • Sets
    • R(e);OGATE,XR(E)::B(G)
    • R(e);OGATE::B(G)
    • R(e);OGATE,P_SPINS(f)::B(G)
    • S(f);N_GUARD,P_SPINR(e)::B(G)
    • S(f);N_GUARD,P_SPINR(e)::B(G),XS(f)
    • S(i);P_SPINQ(h)::S(J),XP(k)
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • Q(h);N_GUARD,P_SPINS(i),XP(H)::QAR1(A)
      • S(f);N_GUARD,P_SPINR(e),XQ(A)::B(G)
      • Q(h);N_GUARD,P_SPINS(i)::QAR1(A)
      • Q(h);N_GUARD,P_PINB(C),P_SPINS(i)::QAR1(A),XQ(h)
      • R(e);OGATE,P_SPINS(f)::QAB1(A)
      • S(i);P_SPINQ(h)::S(J),XP(k)
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).