MESON Chess Problem Database

Problem Display
PID: 55953 (r1N1R3/Bn1p4/2p1P3/Q1qk1p2/2pP1P2/nP1P3K/2N5/6b1 w - - 0 1)

Dyachuk, Vasyl Vasilovich

1st Prize, Halkidiki Quick Ty., 2004

r1N1R3/Bn1p4/2p1P3/Q1qk1p2/2pP1P2/nP1P3K/2N5/6b1

#2

11 + 10

102 Probleemblad 2004
145 StrateGems 2005

SOLUTION

  • SOUND
  • Sets
    • 1...Qb5
      • 2.Sb4#
    • 1...Bxd4
      • 2.Sb4#
    • 1...Sb1
      • 2.bxc4#
    • 1...Sd6
      • 2.Sb6#
      • 2.Qxc5#
    • 1...Sd8
      • 2.Qxc5#
    • 1...d6
      • 2.Sb6#
  • Tries
    • 1.Bxc5?
      • threat
        • 2.Sb4#
        • 2.Sb6#
      • 1...Rxc8
        • 2.Sb4#
      • 1...Sxc2
        • 2.Sb6#
        • 2.bxc4#
      • 1...Sxc5
        • 2.Qxc5#
      • 1...Ra6
        • 2.Sb4#
      • 1...cxd3!
  • Keys
    • 1.Qe1!
      • threat
        • 2.Qe5#
      • 1...Qxd4
        • 2.Sb4#
      • 1...Bxd4
        • 2.Qh1#
      • 1...Qd6
        • 2.Sb6#
      • 1...Be3
        • 2.Qh1#
      • 1...d6
        • 2.Se7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • Q(d);::S(A)
    • B(a);SBLOCK,XP(E)::S(A)
    • S(b);N_GUARD::P(B),XP(c)
    • S(h);N_GUARD::QAR1(G),XQ(d)
    • P(i);SBLOCK::S(J)
  • Tries
    • Try
      • B(I);XQ(d)
      • Threat
        • DUALS(2)
      • Vars
        • R(j);XS(J)::S(A)
        • S(h);OGATE,P_SPINS(h),XB(I)::QAR1(G),XS(h)
        • R(j);::S(A)
      • Refutation
        • P(c);XP(C)
  • Actual
    • Q(G);N_PINQ(d)
    • Threat
      • QAR1(G)
    • Vars
      • Q(d);N_GUARD,XP(E)::S(A)
      • B(a);OGATE,XP(E)::QAB(G)
      • Q(d);N_GUARD,SBLOCK::S(J)
      • B(a);OGATE::QAB(G)
      • P(i);SBLOCK,S_CUTQ(d)::S(J)
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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).