MESON Chess Problem Database

Problem Display
PID: 200610 (8/KNp5/1p2B1p1/1Q1Pp1B1/p1Rqk2N/3b4/2R1P3/8 w - - 0 1)

Novitski, Petr Adrinovich

Zadachi i Etyudi, 2017

8/KNp5/1p2B1p1/1Q1Pp1B1/p1Rqk2N/3b4/2R1P3/8

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.Sd6#
    • 1...c6
      • 2.Sd6#
  • Tries
    • 1.Bf7?
      • threat
        • 2.Bxg6#
      • 1...c5
        • 2.Sd6#
      • 1...Qxc4!
    • 1.Rxd4+?
      • 1...Kxd4
        • 2.Qxd3#
      • 1...exd4!
    • 1.Qe8?
      • threat
        • 2.Qxg6#
      • 1...b5+
        • 2.Sc5#
      • 1...Qxc4!
    • 1.Qxb6?
      • threat
        • 2.Sc5#
      • 1...Qxc4
        • 2.Qe3#
      • 1...cxb6
        • 2.Sd6#
      • 1...c5
        • 2.Sxc5#
        • 2.Sd6#
      • 1...Bxc4!
  • Keys
    • 1.Qb1!
      • threat
        • 2.Qh1#
      • 1...b5+
        • 2.Sc5#
      • 1...Qxc4
        • 2.Rxc4#
      • 1...Bxe2
        • 2.Rxe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • P(h);N_GUARD::S(J)
  • Tries
    • Try
      • B(H);
      • Threat
        • B(H),XP(g)
      • Vars
        • P(h);N_GUARD::S(J)
      • Refutation
        • Q(c);N_SPINQ(c),XR(C)
    • Try
      • R(C);CHECK,XQ(c)
      • Vars
        • K(d);P-FLIGHT,XR(C)::QAR1(E),XB(a)
      • Refutation
        • P(e);XR(C)
    • Try
      • Q(E);
      • Threat
        • QAB(E),XP(g)
      • Vars
        • P(f);CHECK,N_GUARD::S(J)
      • Refutation
        • Q(c);N_SPINQ(c),XR(C)
    • Try
      • Q(E);P_SPINQ(E),XP(f)
      • Threat
        • S(J)
      • Vars
        • Q(c);N_PINQ(E),N_SPINQ(c),XR(C)::QAR1(E)
        • P(h);N_GUARD,XQ(E)::S(J)
      • Refutation
        • B(a);N_SPINQ(c),XR(C)
  • Actual
    • Q(E);
    • Threat
      • QAB(E)
    • Vars
      • P(f);CHECK,N_GUARD::S(J)
      • Q(c);N_SPINQ(c),OGATE,XR(C)::R(A),XQ(c)
      • B(a);OGATE,XP(B)::QAB(E)+R(A),DCHECK,XB(a)
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).