MESON Chess Problem Database

Problem Display
PID: 69918 (2b1RB2/p1Q1n1pr/2p5/2pkNp2/2pp1PP1/4n1P1/8/2K1RB2 w - - 0 1)

Enzil, Biste

1st Prize, Cik, 1970

2b1RB2/p1Q1n1pr/2p5/2pkNp2/2pp1PP1/4n1P1/8/2K1RB2

#2

10 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Bg2#
    • 1...Ke6
      • 2.Qxc6#
    • 1...Sd1
      • 2.Bxc4#
    • 1...Sc2
      • 2.Bxc4#
    • 1...Sg2
      • 2.Bxc4#
    • 1...Sxg4
      • 2.Bxc4#
    • 1...Sg6
      • 2.Qxc6#
    • 1...Sg8
      • 2.Qxc6#
  • Tries
    • 1.Sg6?
      • threat
        • 2.Qe5#
      • 1...Ke4
        • 2.Qxc6#
      • 1...Sxg4
        • 2.Sxe7#
        • 2.Bg2#
      • 1...Sxg6
        • 2.Qd6#
      • 1...Ke6!
    • 1.Sf7?
      • threat
        • 2.Qe5#
      • 1...Ke4
        • 2.Qxc6#
      • 1...Sxg4
        • 2.Bg2#
        • 2.Qd6#
      • 1...Sg6
        • 2.Qd6#
      • 1...Ke6!
    • 1.Bg2+?
      • 1...Ke6
        • 2.Qxc6#
        • 2.Qxe7#
      • 1...Sxg2!
    • 1.Rd8+?
      • 1...Ke4
        • 2.Bg2#
      • 1...Ke6
        • 2.Rd6#
        • 2.Qd6#
        • 2.Qxe7#
      • 1...Bd7!
    • 1.Qd6+?
      • 1...Ke4
        • 2.Bg2#
      • 1...Kxd6!
    • 1.Qd7+?
      • 1...Ke4
        • 2.Bg2#
      • 1...Bxd7!
  • Keys
    • 1.Sd7!
      • threat
        • 2.Qe5#
      • 1...Ke4
        • 2.Qxc6#
      • 1...Ke6
        • 2.Bxc4#
      • 1...Sxg4
        • 2.Bg2#
      • 1...Sg6
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • K(e);P_SPINS(a),S_FLIGHT::B(C)
    • K(e);P_SPINS(i),S_FLIGHT::QAR2(H),XP(g)
    • S(a);N_GUARD::B(C),XP(b)
    • S(a);N_GUARD,XP(F)::B(C),XP(b)
    • S(i);N_GUARD::QAB1(H),XP(g)
  • Tries
    • Try
      • S(G);
      • Threat
        • QAR1(H)
      • Vars
        • K(e);P_SPINS(a),S_FLIGHT::QAB(H),XP(g)
        • S(i);XS(G)::QAR1(H)
      • Refutation
        • K(e);P_SPINS(a),S_FLIGHT
    • Try
      • S(G);
      • Threat
        • QAR1(H)
      • Vars
        • K(e);P_SPINS(a),S_FLIGHT::QAB(H),XP(g)
        • S(i);::QAR1(H)
      • Refutation
        • K(e);P_SPINS(a),S_FLIGHT
    • Try
      • B(C);CHECK
      • Refutation
        • S(a);XB(C)
    • Try
      • R(I);CHECK
      • Vars
        • K(e);P_SPINS(a),S_FLIGHT::B(C)
      • Refutation
        • B(l);P_SPINB(l)
    • Try
      • Q(H);CHECK
      • Vars
        • K(e);P_SPINS(a),S_FLIGHT::B(C)
      • Refutation
        • K(e);P-FLIGHT,P_SPINS(i),XQ(H)
    • Try
      • Q(H);CHECK
      • Vars
        • K(e);P_SPINS(a),S_FLIGHT::B(C)
      • Refutation
        • B(l);XQ(H)
  • Actual
    • S(G);
    • Threat
      • QAR1(H)
    • Vars
      • K(e);P_SPINS(a),S_FLIGHT::QAB(H),XP(g)
      • K(e);P_SPINS(a),S_FLIGHT::B(C),XP(b)
      • S(a);N_GUARD,XP(F)::B(C)
      • S(i);::QAR1(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).