MESON Chess Problem Database

Problem Display
PID: 251147 (2N3n1/1p3nQ1/2R1ppN1/r2k2p1/Pp6/4P1K1/P1B5/2R5 w - - 0 1)

Zamanov, Vidadi

Uralski Problemist, 2012

2N3n1/1p3nQ1/2R1ppN1/r2k2p1/Pp6/4P1K1/P1B5/2R5

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sfh6
      • 2.Qd7#
    • 1...Sd8
      • 2.Qd7#
    • 1...Sh8
      • 2.Qd7#
    • 1...Sgh6
      • 2.Sce7#
    • 1...Se7
      • 2.Scxe7#
  • Tries
    • 1.Rc5+?
      • 1...Kxc5
        • 2.Bb3#
        • 2.Be4#
      • 1...Rxc5!
    • 1.Rd6+?
      • 1...Kc4
        • 2.Bb1#
        • 2.Bd1#
        • 2.Bb3#
        • 2.Bd3#
        • 2.Be4#
        • 2.Bf5#
      • 1...Kc5
        • 2.Bb1#
        • 2.Bd1#
        • 2.Bb3#
        • 2.Bd3#
        • 2.Be4#
        • 2.Bf5#
      • 1...Sxd6!
    • 1.Qxf7?
      • threat
        • 2.Qxe6#
        • 2.Qd7#
      • 1...Kxc6
        • 2.Be4#
      • 1...Rc5
        • 2.Qxe6#
      • 1...Se7
        • 2.Scxe7#
        • 2.Qxe6#
      • 1...bxc6!
  • Keys
    • 1.Rc4!
      • threat
        • 2.Be4#
      • 1...Kxc4
        • 2.Be4#
      • 1...e5
        • 2.Qxf7#
      • 1...Sd6
        • 2.Sb6#
      • 1...f5
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • S(h);OGATE::QAR2(I)
    • S(i);N_GUARD::S(J)
    • S(i);N_GUARD::S(J),XS(i)
  • Tries
    • Try
      • R(G);CHECK
      • Refutation
        • R(b);XR(G)
    • Try
      • R(G);CHECK
      • Refutation
        • S(h);XR(G)
    • Try
      • Q(I);P_PINP(e),XS(h)
      • Threat
        • DUALS(2)
      • Vars
        • K(c);N_GUARD,N_SPINP(e),S_FLIGHT,XR(G)::R(A)+B(C),DCHECK
        • R(b);::QAB1(I),XP(e)
      • Refutation
        • P(g);XR(G)
  • Actual
    • R(G);
    • Threat
      • B(C)
    • Vars
      • K(c);S_FLIGHT,XR(G)::R(A)+B(C)
      • P(e);OGATEB::QAB(I),XS(h)
      • S(h);SBLOCK::S(J)
      • P(f);OGATE::QAR1(I)
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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).