MESON Chess Problem Database

Problem Display
PID: 67992 (8/3QpP2/Nb1p2N1/1B1kP1p1/n5K1/3qPP2/1n6/3R4 w - - 0 1)

Tkachenko, Sergiy Ivanovich

Probleemblad, 2006

8/3QpP2/Nb1p2N1/1B1kP1p1/n5K1/3qPP2/1n6/3R4

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4+
      • 2.e4#
    • 1...Bc5
      • 2.Sc7#
    • 1...Sc4
      • 2.Bc6#
    • 1...Sc5
      • 2.Sb4#
    • 1...e6
      • 2.Qc6#
      • 2.Qxd6#
      • 2.Qb7#
  • Tries
    • 1.Sf4+?
      • 1...Kxe5
        • 2.Qe6#
        • 2.Qxe7#
      • 1...gxf4!
    • 1.Rxd3+?
      • 1...Bd4
        • 2.Rxd4#
        • 2.e4#
      • 1...Sxd3!
    • 1.Qf5?
      • threat
        • 2.Sxe7#
        • 2.e6#
      • 1...Qd4+
        • 2.e4#
      • 1...Sxd1
        • 2.Sxe7#
      • 1...dxe5
        • 2.Qd7#
        • 2.Qxe5#
      • 1...Bd4
        • 2.Sxe7#
      • 1...Bd8
        • 2.e6#
      • 1...Sc4
        • 2.Sxe7#
      • 1...e6
        • 2.Se7#
        • 2.Qe4#
      • 1...Bxe3!
    • 1.f8S?
      • threat
        • 2.Qc6#
        • 2.Qe6#
        • 2.Qb7#
      • 1...Qd4+
        • 2.e4#
      • 1...Bc7
        • 2.Qc6#
        • 2.Qe6#
      • 1...Sc5
        • 2.Sb4#
        • 2.Qc6#
      • 1...e6
        • 2.Qc6#
        • 2.Qxe6#
        • 2.Qxd6#
        • 2.Qb7#
      • 1...Bxe3!
  • Keys
    • 1.exd6!
      • threat
        • 2.dxe7#
      • 1...Qd4+
        • 2.e4#
      • 1...exd6
        • 2.Qf5#
      • 1...Bc5
        • 2.Sc7#
      • 1...Bc7
        • 2.dxc7#
      • 1...Sc4
        • 2.Bc6#
      • 1...Sc5
        • 2.Sb4#
      • 1...e5
        • 2.Se7#
      • 1...e6
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • Q(b);CHECK::P(B)
    • B(f);N_GUARD,SBLOCK::S(G)
    • S(a);SBLOCK::B(E)
    • S(c);SBLOCK::S(G)
  • Tries
    • Try
      • S(H);CHECK
      • Refutation
        • P(e);XS(H)
    • Try
      • R(A);CHECK,XQ(b)
      • Refutation
        • S(a);XR(A)
    • Try
      • Q(I);N_PINP(g)
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);CHECK::P(B)
        • S(a);N_SPINQ(b),XR(A)::S(H),XP(h)
        • B(f);N_SPINQ(b)::S(H),XP(h)
        • B(f);::QAR(I)+P(F)
        • S(a);::S(H),XP(h)
      • Refutation
        • B(f);XP(B)
    • Try
      • P(J);
      • Threat
        • DUALS(3)
      • Vars
        • Q(b);CHECK::P(B)
      • Refutation
        • B(f);XP(B)
  • Actual
    • P(F);XP(g)
    • Threat
      • QAR(I)+P(F),XP(h)
    • Vars
      • Q(b);CHECK::P(B)
      • P(h);N_GUARD,P_SPINP(h),SBLOCK,XP(F)::QAR2(I)
      • B(f);N_GUARD,SBLOCK::S(G)
      • B(f);OGATE::QAR(I)+P(F),XB(f)
      • S(a);SBLOCK::B(E)
      • S(c);SBLOCK::S(G)
      • P(h);SBLOCK::S(H)
      • P(h);SBLOCK::QAB1(I)
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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).