MESON Chess Problem Database

Problem Display
PID: 123033 (bn1R1r2/p1KP1PB1/p1PN2P1/4NPp1/3k1qQb/2R2P2/BP6/8 w - - 0 1)

Szilagyi, Gabor

Source?, 0000

bn1R1r2/p1KP1PB1/p1PN2P1/4NPp1/3k1qQb/2R2P2/BP6/8

#2

15 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Qxe4#
    • 1...Qxg4
      • 2.Sxg4#
    • 1...Rxf7
      • 2.Sexf7#
    • 1...Bxc6
      • 2.Sxc6#
    • 1...Sxc6
      • 2.Sxc6#
    • 1...Sxd7
      • 2.Sxd7#
    • 1...a5
      • 2.Sb5#
  • Tries
    • 1.Sec4+?
      • 1...Kd5
        • 2.Se3#
        • 2.Sb6#
      • 1...Kc5!
    • 1.Qg1+?
      • 1...Qe3
        • 2.Sd3#
        • 2.Sg4#
        • 2.Qxe3#
      • 1...Bf2!
  • Keys
    • 1.Se4!
      • threat
        • 2.Rd3#
      • 1...Qxe5+
        • 2.Sd6#
      • 1...Qxf3
        • 2.Sxf3#
      • 1...Qxe4
        • 2.Qxe4#
      • 1...Qd2
        • 2.Sxd2#
      • 1...Qe3
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • Q(b);OGATE::QAR1(E),XQ(b)
    • Q(b);N_SPINQ(b),XQ(E)::B(N)+S(F),XQ(b)
    • R(i);P_PINP(L),XP(M)::B(N)+S(F),XR(i)
    • B(g);XP(H)::B(N)+S(F),DCHECK,XB(g)
    • S(h);XP(H)::B(N)+S(F),DCHECK,XS(h)
    • S(h);XP(L)::B(N)+S(F),XS(h)
    • P(e);N_GUARD::S(I)
  • Tries
    • Try
      • S(F);CHECK,P_SPINS(I)
      • Refutation
        • K(a);N_SPINQ(b),S_FLIGHT
    • Try
      • Q(E);CHECK,N_PINQ(b)
      • Refutation
        • B(c);P_SPINB(c)
  • Actual
    • S(I);N_PINQ(b),P_SPINS(F)
    • Threat
      • R1(C)
    • Vars
      • Q(b);CHECK,P_SPINQ(b),XS(F)::QAR(E)+S(I)
      • Q(b);N_PINS(F),XP(D)::B(N)+S(F),DCHECK,XQ(b)
      • Q(b);N_PINS(F),OGATE,P_SPINQ(b),XS(I)::QAR1(E),XQ(b)
      • Q(b);N_PINS(F)::QAR(E)+S(I),XQ(b)
      • Q(b);N_PINS(F),SBLOCK::B(N)+S(F)
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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).