MESON Chess Problem Database

Problem Display
PID: 251195 (1R6/8/p5nK/3BpbQ1/pn6/2kP1NNp/2PR1p2/2B1bq2 w - - 0 1)

Novitski, Petr Adrinovich

1st HM., Uralski Problemist-20 JT, 2013

1R6/8/p5nK/3BpbQ1/pn6/2kP1NNp/2PR1p2/2B1bq2

#2

10 + 11

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qe2
      • 2.Sxe2#
    • 1...Qg2
      • 2.Se2#
    • 1...Qg1
      • 2.Se2#
    • 1...Qh1
      • 2.Se2#
    • 1...Bxd2
      • 2.Qxd2#
    • 1...Be4
      • 2.Sxe4#
    • 1...Bg4
      • 2.Se4#
    • 1...Be6
      • 2.Se4#
    • 1...Bd7
      • 2.Se4#
    • 1...Bc8
      • 2.Se4#
    • 1...Sa2
      • 2.Bb2#
    • 1...Sxc2
      • 2.Bb2#
    • 1...Sxd5
      • 2.Bb2#
    • 1...Sc6
      • 2.Bb2#
  • Tries
    • 1.Rc8+?
      • 1...Bxc8
        • 2.Se4#
      • 1...Sc6!
  • Keys
    • 1.Qe3!
      • threat
        • 2.Qc5#
      • 1...Qxd3
        • 2.Se2#
      • 1...Bxd2
        • 2.Qxd2#
      • 1...Bxd3
        • 2.Se4#
      • 1...Sxd3
        • 2.Bb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 13
  • Sets
    • Q(b);N_GUARD::S(F),XQ(b)
    • Q(b);N_GUARD::S(F)
    • B(a);OGATE,P_PINQ(H),XR(C)::QAB1(H),XB(a)
    • B(i);N_GUARD::S(F),XB(i)
    • B(i);N_GUARD::S(F)
    • S(g);::B(A)
    • S(g);XP(B)::B(A)
    • S(g);XB(G)::B(A)
  • Tries
    • Try
      • R(J);CHECK
      • Vars
        • B(i);XR(J)::S(F)
      • Refutation
        • S(g);P_SPINS(g)
  • Actual
    • Q(H);
    • Threat
      • QAR2(H)
    • Vars
      • Q(b);N_GUARD,P_SPINQ(b),XP(D)::S(F)
      • B(a);OGATE,P_PINQ(H),XR(C)::QAB1(H),XB(a)
      • B(i);N_GUARD,P_SPINB(i),XP(D)::S(F)
      • S(g);P_SPINS(g),XP(D)::B(A)
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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).