MESON Chess Problem Database

Problem Display
PID: 63176 (8/1K1B4/2Rp1pr1/2BknR1r/4pQN1/1pp1p3/1N3q2/8 w - - 0 1)

Banny, Dimitry Nikolaevich

3rd Prize, Wola Gulowska, 1996

8/1K1B4/2Rp1pr1/2BknR1r/4pQN1/1pp1p3/1N3q2/8

#2

8 + 11

15345 Wola Gulowska Award 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Qh4
      • 2.Sxe3#
    • 1...Qf1
      • 2.Sxe3#
    • 1...Qxb2
      • 2.Sxe3#
    • 1...Qc2
      • 2.Sxe3#
    • 1...Qg2
      • 2.Sxe3#
    • 1...Qh2
      • 2.Sxe3#
    • 1...Rg5
      • 2.Sxf6#
    • 1...Rg7
      • 2.Sxf6#
    • 1...Rg8
      • 2.Sxf6#
  • Tries
    • 1.Rxf6?
      • threat
        • 2.Be6#
      • 1...Rxf6
        • 2.Sxf6#
      • 1...Sxc6
        • 2.Qxd6#
      • 1...Sxd7
        • 2.Qxd6#
      • 1...dxc5
        • 2.Rcd6#
      • 1...Rg7
        • 2.Rfxd6#
      • 1...Rh7!
    • 1.Qxe5+?
      • 1...dxe5
        • 2.Be6#
      • 1...fxe5!
  • Keys
    • 1.Qxe3!
      • threat
        • 2.Rxd6#
      • 1...Qxe3
        • 2.Sxe3#
      • 1...Qxb2
        • 2.Qd4#
      • 1...cxb2
        • 2.Qxb3#
      • 1...dxc5
        • 2.Be6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 8
  • Sets
    • Q(a);N_GUARD::S(C),XP(d)
    • Q(a);N_GUARD,XS(A)::S(C),XP(d)
    • R(k);N_GUARD::S(C),XP(j)
    • R(k);N_GUARD,P_PINB(H)::S(C),XP(j)
  • Tries
    • Try
      • R(E);N_PINS(g),XP(j)
      • Threat
        • B(H)
      • Vars
        • R(k);XR(E)::S(C),XR(k)
        • S(g);OGATE,XR(F)::QAR1(B),XP(i)
        • S(g);OGATE,XB(H)::QAR1(B),XP(i)
        • P(i);SBLOCK,XB(D)::R1(F)
        • R(k);N_GUARD,P_PINB(H)::R1(E),XP(i)
      • Refutation
        • R(h);P_PINB(H)
    • Try
      • Q(B);CHECK,XS(g)
      • Vars
        • P(i);P_SPINP(i),XQ(B)::B(H)
      • Refutation
        • P(j);P_SPINP(j),XQ(B)
  • Actual
    • Q(B);XP(d)
    • Threat
      • R1(F),XP(i)
    • Vars
      • Q(a);XQ(B)::S(C),XQ(a)
      • Q(a);N_GUARD,XS(A)::QAR1(B)
      • P(c);OGATE,XS(A)::QAB(B),XP(b)
      • P(i);XB(D)::B(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).