MESON Chess Problem Database

Problem Display
PID: 273523 (5K2/2B5/8/Npkb1N1R/1n6/P4Rp1/r3Pq2/1B4Q1 w - - 0 1)

Dragoescu, Radu

diagrammes, 1978

5K2/2B5/8/Npkb1N1R/1n6/P4Rp1/r3Pq2/1B4Q1

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qe3
      • 2.Qxe3#
    • 1...Qd4
      • 2.Qxd4#
    • 1...g2
      • 2.Qxf2#
  • Tries
    • 1.Sg7?
      • threat
        • 2.Se6#
      • 1...Kd4
        • 2.Bb6#
      • 1...Rxe2!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Sdb3#
        • 2.Se6#
      • 1...Qxf3+
        • 2.Sxf3#
      • 1...Kxd4
        • 2.Bb6#
      • 1...Qxd4
        • 2.Rc3#
      • 1...Rxe2
        • 2.Sdb3#
      • 1...Rxa3
        • 2.Se6#
      • 1...Rb2
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • Q(b);OGATE::QAB(B),XQ(b)
    • Q(b);OGATE::QAB1(B),XQ(b)
    • P(c);N_GUARD::QAB(B),XQ(b)
  • Tries
    • Try
      • S(G);P_PINB(g),P_SPINR(E)
      • Threat
        • S(G)
      • Vars
        • K(f);N_GUARD,N_SPINB(g),S_FLIGHT::B(I)
      • Refutation
        • R(a);XP(C)
  • Actual
    • S(G);N_PINQ(b),P_PINB(g),P_SPINR(E)
    • Threat
      • DUALS(2)
    • Vars
      • Q(b);CHECK,XR(E)::QAB(B)+S(G),XQ(b)
      • K(f);N_GUARD,N_SPINB(g),P_SPINQ(b),S_FLIGHT,XS(G)::B(I)
      • Q(b);N_PINR(E),P_SPINQ(b),XS(G)::R(E)
      • R(a);XP(C)::S(G)
      • R(a);XP(D)::S(G)
      • R(a);::S(G)
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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).