MESON Chess Problem Database

Problem Display
PID: 2482 (8/8/3p1p2/1N2p3/4kNQ1/5n2/2K3B1/8 w - - 0 1)

Loyd, Sam

New York Musical World, 1860

8/8/3p1p2/1N2p3/4kNQ1/5n2/2K3B1/8

#2

5 + 5

1679 American Chess Nuts 1868
5206 Sam Loyd and His Chess Problems 1913
3360 Simple Two-move Themes 1924
17120 Tehtavashakin kasikirja (Kallio) 1995
5626 European Junior Chess Solving Championship 2003
5405 Chess Solving Yearbook 2003 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Qxf3#
    • 1...exf4
      • 2.Qe6#
    • 1...f5
      • 2.Qxf3#
  • Tries
    • 1.Kc3?
      • 1...Ke3
        • 2.Qxf3#
      • 1...exf4
        • 2.Qe6#
      • 1...f5
        • 2.Qxf3#
      • 1...d5!
    • 1.Se2+?
      • 1...Ke3
        • 2.Qxf3#
      • 1...Kd5!
    • 1.Sd3+?
      • 1...Ke3
        • 2.Qxf3#
      • 1...Kd5!
    • 1.Sh3+?
      • 1...Ke3
        • 2.Qxf3#
      • 1...Kd5!
    • 1.Sh5+?
      • 1...Ke3
        • 2.Qxf3#
      • 1...Kd5!
    • 1.Se6+?
      • 1...Ke3
        • 2.Qxf3#
      • 1...Kd5!
    • 1.Sg6+?
      • 1...Ke3
        • 2.Qxf3#
      • 1...Kd5!
  • Keys
    • 1.Bh1!
      • 1...Ke3
        • 2.Qxf3#
      • 1...exf4
        • 2.Qe6#
      • 1...d5
        • 2.Sg2#
      • 1...f5
        • 2.Qxf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINS(a),P-FLIGHT::QAR1(D),XS(a)
    • P(c);OGATEB,P_SPINP(c),SBLOCK,XS(C)::QAR2(D)
    • P(e);SBLOCK::QAB1(D),XS(a)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(b);N_SPINS(a),P-FLIGHT::QAR1(D),XS(a)
        • P(c);OGATEB,P_SPINP(c),SBLOCK,XS(C)::QAR2(D)
        • P(e);SBLOCK::QAB1(D),XS(a)
      • Refutation
        • P(d);
    • Try
      • S(C);CHECK
      • Vars
        • K(b);N_SPINS(a),P-FLIGHT::QAR1(D),XS(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(b);N_SPINS(a),P-FLIGHT::QAR1(D),XS(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(b);N_SPINS(a),P-FLIGHT::QAR1(D),XS(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(b);N_SPINS(a),P-FLIGHT::QAR1(D),XS(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(b);N_SPINS(a),P-FLIGHT::QAR1(D),XS(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(b);N_SPINS(a),P-FLIGHT::QAR1(D),XS(a)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • B(B);
    • Vars
      • K(b);N_SPINS(a),P-FLIGHT::QAR1(D),XS(a)
      • P(c);OGATEB,P_SPINP(c),SBLOCK,XS(C)::QAR2(D)
      • P(d);SBLOCK::QAR(D)+S(C)
      • P(e);SBLOCK::QAB1(D),XS(a)
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).