MESON Chess Problem Database

Problem Display
PID: 33572 (2BR4/K7/1N6/3Pkp1N/2p1qp2/p1P1nP2/r7/1QBrR1b1 w - - 0 1)

Hadzi-Vaskov, Georgi

Miloseski, Bosko

Probleemblad, 2001

2BR4/K7/1N6/3Pkp1N/2p1qp2/p1P1nP2/r7/1QBrR1b1

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb1
      • 2.Sxc4#
    • 1...Qc2
      • 2.Sxc4#
    • 1...Qxf3
      • 2.Sxc4#
      • 2.Qxf5#
    • 1...Qxd5
      • 2.Qxf5#
    • 1...Qd4
      • 2.Qxf5#
    • 1...Sf1
      • 2.Bxf4#
    • 1...Sc2
      • 2.Bxf4#
    • 1...Sg4
      • 2.Bxf4#
  • Tries
    • 1.Sxc4+?
      • 1...Qxc4
        • 2.Qxf5#
      • 1...Sxc4+!
    • 1.Qb4?
      • threat
        • 2.Re8#
        • 2.Qd6#
        • 2.Qe7#
      • 1...Qxf3
        • 2.Re8#
        • 2.Qe7#
      • 1...Rxd5
        • 2.Re8#
        • 2.Qe7#
      • 1...Sxd5
        • 2.Qd6#
      • 1...Qxd5!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Qe8#
      • 1...Qxd5
        • 2.Sxc4#
      • 1...Sxd5
        • 2.Bxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • Q(g);N_GUARD,P_SPINS(e),XQ(A)::S(H),XP(f)
    • Q(g);N_GUARD,P_SPINS(e)::S(H),XP(f)
    • Q(g);OGATE,P_SPINS(e),XP(F)::QAR1(A),XP(j)
    • Q(g);OGATE,P_PINS(H),P_SPINS(e)::QAR1(A),XP(j)
    • S(e);OGATE,P_PINS(H),P_SPINQ(g)::B(B),XP(h)
  • Tries
    • Try
      • S(H);CHECK,XP(f)
      • Vars
        • Q(g);OGATE,P_SPINS(e),XS(H)::QAR1(A),XP(j)
      • Refutation
        • S(e);CHECK,P_SPINQ(g),XS(H)
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • S(e);P_PINS(H),P_SPINQ(g),XP(F)::QAB1(A)
      • Refutation
        • Q(g);P_SPINS(e),XP(F)
  • Actual
    • Q(A);
    • Threat
      • QAR(A)
    • Vars
      • Q(g);N_GUARD,P_SPINQ(g),P_SPINS(e),XP(F)::S(H),XP(f)
      • S(e);OGATE,P_PINS(H),P_SPINQ(g),P_SPINS(e),XP(F)::B(B),XP(h)
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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).