MESON Chess Problem Database

Problem Display
PID: 151947 (2R5/2q1p3/p1P1Q2K/pkPpP3/p3N3/P2p4/8/2R1n1Bb w - - 0 1)

Stojnic, Dragan

1st Prize, diagrammes, 2008

2R5/2q1p3/p1P1Q2K/pkPpP3/p3N3/P2p4/8/2R1n1Bb

#2

10 + 10

23 Die Schwalbe 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Qb8
      • 2.Rxb8#
    • 1...Qxc6
      • 2.Qxc6#
    • 1...dxe4
      • 2.Rb1#
    • 1...d4
      • 2.Rb1#
  • Tries
    • 1.Rb8+?
      • 1...Qb6
        • 2.Rxb6#
      • 1...Qb7
        • 2.Rxb7#
      • 1...Qxb8!
  • Keys
    • 1.Qxd5!
      • threat
        • 2.Sc3#
        • 2.Rb1#
      • 1...Qd6+
        • 2.cxd6#
      • 1...Qxc6+
        • 2.Qxc6#
      • 1...Qxe5
        • 2.Qc4#
      • 1...Bxe4
        • 2.Rb1#
      • 1...Sc2
        • 2.Sc3#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • Q(i);N_GUARD::R(J),XQ(i)
    • Q(i);OGATE,P_PINQ(H),XP(G)::QAB1(H),XQ(i)
    • P(g);XS(D)::R(A)
    • P(g);::R(A)
  • Tries
    • Try
      • R(J);CHECK
      • Vars
        • Q(i);N_GUARD,P_SPINQ(i)::R1(J),XQ(i)
        • Q(i);N_GUARD,P_SPINQ(i)::R(J),XQ(i)
      • Refutation
        • Q(i);XR(J)
  • Actual
    • Q(H);XP(g)
    • Threat
      • DUALS(2)
    • Vars
      • Q(i);CHECK,OGATE::QAR(H)+P(E),XQ(i)
      • Q(i);CHECK,OGATE,XP(G)::QAB1(H),XQ(i)
      • Q(i);XP(F)::QAB1(H)
      • B(b);XS(D)::R(A)
      • S(a);::S(D)
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).