MESON Chess Problem Database

Problem Display
PID: 46033 (1B4q1/3pp3/5p2/r6Q/1RNNk2b/p1p4n/2K2p2/3R3b w - - 0 1)

Storozhenko, Ivan Ivanovich

Uralski Problemist, 2002

1B4q1/3pp3/5p2/r6Q/1RNNk2b/p1p4n/2K2p2/3R3b

#2

7 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Qd5
      • 2.Qe2#
    • 1...Ra4
      • 2.Qf5#
    • 1...Rd5
      • 2.Qe2#
    • 1...Rf5
      • 2.Qxf5#
    • 1...Ra6
      • 2.Qf5#
    • 1...Ra7
      • 2.Qf5#
    • 1...Ra8
      • 2.Qf5#
    • 1...Bf3
      • 2.Qxf3#
    • 1...d5
      • 2.Qe2#
      • 2.Qf5#
  • Tries
    • 1.Sd2+?
      • 1...Ke3
        • 2.Qe2#
      • 1...cxd2!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Rd4#
      • 1...Qxc4
        • 2.Rxc4#
      • 1...Rxf5
        • 2.Qe2#
      • 1...Qg4
        • 2.Se5#
      • 1...Qg5
        • 2.Sce3#
      • 1...Bg5
        • 2.Sg3#
      • 1...Sg5
        • 2.Qg4#
      • 1...e5
        • 2.Scd6#
      • 1...Qd5
        • 2.Sd2#
      • 1...Rd5
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 6
    • REMOVED MATES = 5
  • Sets
    • Q(l);SBLOCK::QAR2(F)
    • R(h);N_GUARD::QAB1(F)
    • R(h);SBLOCK::QAR2(F)
    • R(h);N_GUARD::QAB1(F),XR(h)
    • B(a);N_GUARD::QAB1(F),XB(a)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(f);P-FLIGHT::QAR1(F)
      • Refutation
        • P(d);XS(D)
  • Actual
    • S(E);
    • Threat
      • R1(A)
    • Vars
      • Q(l);OGATE,P_SPINQ(l),XS(D)::R(C),XQ(l)
      • R(h);SBLOCK,XS(E)::QAR2(F)
      • Q(l);N_GUARD::R(C)+S(D)
      • B(g);N_GUARD,S_CUTQ(l)::S(E)
      • S(e);N_GUARD,S_CUTQ(l)::QAR2(F)
      • P(k);SBLOCK::R(C)+S(D),DCHECK
      • Q(l);SBLOCK::R(C)+S(D),DCHECK
      • R(h);SBLOCK::R(C)+S(D),DCHECK
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).