MESON Chess Problem Database

Problem Display
PID: 42634 (2b5/3B4/1Q3R2/7n/2P1kn2/R1b1N3/7B/3K3N w - - 0 1)

Hebelt, Vaclav

1/2 Prize, Shakhmaty v SSSR, 1960

2b5/3B4/1Q3R2/7n/2P1kn2/R1b1N3/7B/3K3N

#2

9 + 5

3749 FIDE Album (1959-1961) 1966

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Sf2#
    • 1...Kf3
      • 2.Bc6#
    • 1...Ke5
      • 2.Re6#
    • 1...Se2
      • 2.Sf2#
    • 1...Sg2
      • 2.Sf2#
    • 1...Sd3
      • 2.Bc6#
    • 1...Sd5
      • 2.Sf2#
    • 1...Se6
      • 2.Sf2#
    • 1...Sg6
      • 2.Sf2#
  • Tries
    • 1.Sf2+?
      • 1...Ke5
        • 2.Seg4#
        • 2.Rf5#
        • 2.Re6#
        • 2.Qd6#
      • 1...Kf3!
    • 1.Bc6+?
      • 1...Kd3
        • 2.Sf2#
      • 1...Sd5
        • 2.Sf2#
      • 1...Ke5!
    • 1.Rxf4+?
      • 1...Kd3
        • 2.Sf2#
        • 2.Qd4#
      • 1...Ke5
        • 2.Sg4#
        • 2.Qc5#
        • 2.Qc7#
        • 2.Qe6#
        • 2.Qb8#
      • 1...Sxf4!
  • Keys
    • 1.Sc2!
      • threat
        • 2.Qe3#
      • 1...Kd3
        • 2.Qd4#
      • 1...Kf3
        • 2.Qc6#
      • 1...Ke5
        • 2.Qe6#
      • 1...Bd2
        • 2.Qd4#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Sg2
        • 2.Sf2#
      • 1...Sd5
        • 2.Sf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • K(b);P_SPINB(a),S_FLIGHT::S(B)
    • K(b);P_SPINS(c),S_FLIGHT::B(I)
    • K(b);P-FLIGHT,P_SPINS(c)::R1(H)
    • S(c);::S(B)
    • S(c);N_GUARD,SBLOCK::B(I)
  • Tries
    • Try
      • S(B);CHECK
      • Refutation
        • K(b);P_SPINS(c),S_FLIGHT
    • Try
      • B(I);CHECK
      • Vars
        • K(b);P_SPINB(a),S_FLIGHT::S(B)
        • S(c);P_SPINS(c)::S(B)
      • Refutation
        • K(b);P-FLIGHT,P_SPINS(c)
    • Try
      • R(H);CHECK,XS(c)
      • Refutation
        • S(d);XR(H)
  • Actual
    • S(E);
    • Threat
      • QAR1(G)
    • Vars
      • K(b);P_SPINB(a),S_FLIGHT::QAR1(G)
      • K(b);P_SPINB(a),P_SPINS(c),S_FLIGHT::QAB(G)
      • K(b);P-FLIGHT,P_SPINS(c)::QAR1(G)
      • B(a);N_GUARD::QAR1(G)
      • B(a);N_GUARD::QAR1(G),XB(a)
      • S(c);::S(B)
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).