MESON Chess Problem Database

Problem Display
PID: 273209 (1Bn1N2Q/r2B4/p2q2b1/2Pk1nR1/1P6/3Kb3/4Rp2/8 w - - 0 1)

Denes, G

Springaren, 1989

1Bn1N2Q/r2B4/p2q2b1/2Pk1nR1/1P6/3Kb3/4Rp2/8

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qh2
      • 2.Sf6#
    • 1...Qg3
      • 2.Sf6#
    • 1...Qf4
      • 2.Sf6#
    • 1...Qxc5
      • 2.Sf6#
      • 2.Qe5#
      • 2.Qh1#
    • 1...Qe5
      • 2.Qxe5#
    • 1...Qf8
      • 2.Qe5#
      • 2.Qh1#
    • 1...Qb6
      • 2.Qe5#
      • 2.Qh1#
    • 1...Qc6
      • 2.Qe5#
      • 2.Qh1#
    • 1...Qf6
      • 2.Sxf6#
      • 2.Qh1#
    • 1...Bc1
      • 2.Qd4#
      • 2.Qh1#
    • 1...Bd2
      • 2.Qd4#
      • 2.Qh1#
    • 1...Bd4
      • 2.Qxd4#
      • 2.Qh1#
    • 1...Bf4
      • 2.Qd4#
      • 2.Qh1#
    • 1...Bxc5
      • 2.Qh1#
    • 1...Bxg5
      • 2.Qh1#
  • Tries
    • 1.Sf6+?
      • 1...Qxf6
        • 2.Qh1#
      • 1...Ke5+!
    • 1.Rxf5+?
      • 1...Qe5
        • 2.Sf6#
        • 2.Qxe5#
        • 2.Qh1#
      • 1...Bxf5+!
  • Keys
    • 1.Qh4!
      • threat
        • 2.Qe4#
      • 1...Ke5+
        • 2.Qd4#
      • 1...Qf4
        • 2.Sf6#
      • 1...Qe5
        • 2.Qc4#
      • 1...Qe7
        • 2.Qc4#
      • 1...Qe6
        • 2.Qc4#
      • 1...Bf4
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • Q(f);N_GUARD::S(H)
    • Q(f);N_GUARD,N_SPINS(d)::QAR1(I),XQ(f)
    • B(b);XP(D)::QAB(I)
    • B(b);N_SPINS(d),XR(E)::QAB(I)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • Q(f);XS(H)::QAB(I)
      • Refutation
        • K(c);CHECK,P-FLIGHT,P_SPINB(b),P_SPINQ(f)
    • Try
      • R(E);CHECK,P_SPINR(E),XS(d)
      • Refutation
        • B(g);CHECK,XR(E)
  • Actual
    • Q(I);
    • Threat
      • QAB1(I)
    • Vars
      • K(c);CHECK,P-FLIGHT,P_SPINB(b),P_SPINQ(f)::QAB1(I)
      • Q(f);N_GUARD::S(H)
      • Q(f);N_SPINS(d)::QAB1(I)
      • Q(f);::QAB1(I)
      • B(b);::QAB(I)
HTML5 logo

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).