MESON Chess Problem Database

Problem Display
PID: 104476 (1bN1B3/2pn4/2k1q3/pR2P1n1/K1P1r3/3N4/2R5/7Q w - - 0 1)

Nesic, Milivoj S

Mlad Borec, 1963

1bN1B3/2pn4/2k1q3/pR2P1n1/K1P1r3/3N4/2R5/7Q

#2

9 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qh3
      • 2.Se7#
    • 1...Qxc4+
      • 2.Rxc4#
    • 1...Qg4
      • 2.Se7#
    • 1...Qd5
      • 2.Se7#
    • 1...Qf5
      • 2.Se7#
    • 1...Qg8
      • 2.Se7#
    • 1...Qxe5
      • 2.Sxe5#
    • 1...Qg6
      • 2.Se7#
    • 1...Qh6
      • 2.Se7#
    • 1...Qe7
      • 2.Sxe7#
    • 1...Ba7
      • 2.Sxa7#
  • Tries
    • 1.Kxa5?
      • threat
        • 2.Sb4#
      • 1...Qe7
        • 2.Sxe7#
      • 1...Qd6!
    • 1.Qxe4+?
      • 1...Qd5
        • 2.Se7#
        • 2.Qxd5#
        • 2.cxd5#
      • 1...Sxe4!
  • Keys
    • 1.Qh6!
      • threat
        • 2.Se7#
      • 1...Rxc4+
        • 2.Rxc4#
      • 1...Rxe5
        • 2.Sxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 11
  • Sets
    • Q(e);N_GUARD::S(H)
    • Q(e);CHECK,OGATE,P_SPINQ(e),XP(E)::R(B),XQ(e)
    • Q(e);N_GUARD,N_SPINR(a)::S(H)
    • Q(e);XP(G)::S(C),XQ(e)
    • Q(e);N_GUARD::S(H),XQ(e)
    • B(h);N_GUARD::S(H),XB(h)
  • Tries
    • Try
      • K(D);N_SPINP(E),P-FLIGHT,XP(b)
      • Threat
        • S(C)
      • Vars
        • Q(e);N_GUARD::S(H),XQ(e)
      • Refutation
        • Q(e);
    • Try
      • Q(A);CHECK,N_SPINP(E),XR(a)
      • Refutation
        • S(c);XQ(A)
  • Actual
    • Q(A);N_PINR(a),P_PINQ(e)
    • Threat
      • S(H)
    • Vars
      • R(a);CHECK,OGATE,P_SPINR(a),XP(E)::R(B),XR(a)
      • R(a);N_PINP(E),XP(G)::S(C),XR(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).