MESON Chess Problem Database

Problem Display
PID: 54495 (2n1q3/5p2/5QbN/2R1np2/pP1k1Pp1/2N2r2/1PK2PB1/6B1 w - - 0 1)

Velikhanov, Kenan

Probleemblad, 2003

2n1q3/5p2/5QbN/2R1np2/pP1k1Pp1/2N2r2/1PK2PB1/6B1

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qb5
      • 2.Qxe5#
    • 1...Qc6
      • 2.Qxe5#
    • 1...Qd7
      • 2.Qxe5#
    • 1...Qd8
      • 2.Qxe5#
    • 1...Qf8
      • 2.Qxe5#
    • 1...Qg8
      • 2.Qxe5#
    • 1...Rxf2+
      • 2.Bxf2#
    • 1...Rxc3+
      • 2.bxc3#
    • 1...Rd3
      • 2.Se2#
    • 1...Re3
      • 2.fxe3#
    • 1...Rg3
      • 2.Se2#
      • 2.fxg3#
      • 2.f3#
    • 1...Rh3
      • 2.Se2#
      • 2.f3#
    • 1...Rxf4
      • 2.Se2#
      • 2.f3#
    • 1...Bh5
      • 2.Sxf5#
    • 1...Sd6
      • 2.Qxd6#
    • 1...Sa7
      • 2.Qd6#
    • 1...Se7
      • 2.Qxe5#
  • Tries
    • 1.Sb5+?
      • 1...Qxb5
        • 2.Qxe5#
      • 1...Ke4!
    • 1.Bxf3?
      • threat
        • 2.Se2#
      • 1...Qb5
        • 2.Sxb5#
        • 2.Qxe5#
      • 1...gxf3!
  • Keys
    • 1.Qxf5!
      • threat
        • 2.Se2#
      • 1...Rxf2+
        • 2.Bxf2#
      • 1...Rxc3+
        • 2.bxc3#
      • 1...Bxf5+
        • 2.Sxf5#
      • 1...Qb5
        • 2.Sxb5#
      • 1...Re3
        • 2.fxe3#
      • 1...Sd3
        • 2.Qd5#
      • 1...Sc4
        • 2.Rd5#
      • 1...Sc6
        • 2.Sb5#
      • 1...Sd7
        • 2.Sb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 10
  • Sets
    • Q(j);N_GUARD::QAB1(J),XS(e)
    • R(a);CHECK,OGATE,P_SPINR(a),XP(D)::B(A),XR(a)
    • R(a);CHECK,OGATE,XS(F)::P(B),XR(a)
    • R(a);::S(F)
    • R(a);OGATE::P(D),XR(a)
    • B(g);N_GUARD::S(K),XP(f)
    • S(i);N_GUARD::QAR2(J),XS(i)
    • S(i);N_GUARD::QAR2(J)
    • S(i);S_CUTQ(j)::QAB1(J),XS(e)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • Q(j);XS(F)::QAB1(J),XS(e)
      • Refutation
        • K(c);N_SPINS(e),P-FLIGHT,P_SPINR(a)
    • Try
      • B(E);XR(a)
      • Threat
        • S(F)
      • Refutation
        • P(d);XB(E)
  • Actual
    • Q(J);N_PINS(e),P_SPINQ(J),XP(f)
    • Threat
      • S(F)
    • Vars
      • R(a);CHECK,OGATE,P_SPINR(a),XP(D)::B(A),XR(a)
      • R(a);CHECK,OGATE,XS(F)::P(B),XR(a)
      • B(g);CHECK,XQ(J)::S(K),XB(g)
      • Q(j);N_GUARD::S(F),XQ(j)
      • R(a);OGATE::P(D),XR(a)
      • S(e);N_PINQ(J)::QAR1(J)
      • S(e);SBLOCK::R1(I)
      • S(e);S_CUTQ(j)::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).