MESON Chess Problem Database

Problem Display
PID: 17493 (8/5N2/8/1K1kP3/3N3Q/1R6/5n2/2nB2Bb w - - 0 1)

Loewenton, Leon

3rd Comm., Chess Correspondent, 1947

8/5N2/8/1K1kP3/3N3Q/1R6/5n2/2nB2Bb

#2

8 + 4

3310 2345 Chess Problems 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.Qd8#
    • 1...Sxb3
      • 2.Bxb3#
    • 1...Sxd1
      • 2.Qxh1#
    • 1...Sd3
      • 2.Qxh1#
    • 1...Sg4
      • 2.Qxh1#
  • Tries
    • 1.Bf3+?
      • 1...Se4
        • 2.Qd8#
        • 2.Qxe4#
      • 1...Bxf3!
    • 1.Bxf2?
      • threat
        • 2.Qxh1#
      • 1...Bf3
        • 2.Bxf3#
      • 1...Be4
        • 2.Qd8#
      • 1...Bg2!
    • 1.Rc3?
      • threat
        • 2.Rc5#
      • 1...Be4
        • 2.Qd8#
      • 1...Sg4
        • 2.Qxh1#
      • 1...Sb3
        • 2.Bxb3#
      • 1...Scd3
        • 2.Bb3#
      • 1...Sfd3
        • 2.Qxh1#
      • 1...Se4!
    • 1.Qxh1+?
      • 1...Kxd4
        • 2.Bxf2#
      • 1...Sxh1
        • 2.Bf3#
      • 1...Se4!
  • Keys
    • 1.Bg4!
      • threat
        • 2.Be6#
      • 1...Kxd4
        • 2.Bf3#
      • 1...Ke4
        • 2.Bf3#
      • 1...Sxg4
        • 2.Qxh1#
      • 1...Be4
        • 2.Qd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • B(b);SBLOCK::QAR(E)
    • S(a);OGATE,XR(C)::B(A),XS(a)
    • S(c);N_GUARD,XB(A)::QAB(E),XB(b)
    • S(c);N_GUARD::QAB(E),XB(b)
  • Tries
    • Try
      • B(A);CHECK
      • Refutation
        • B(b);XB(A)
    • Try
      • B(B);XS(c)
      • Threat
        • QAB(E),XB(b)
      • Vars
        • B(b);N_GUARD::B(A),XB(b)
        • B(b);SBLOCK::QAR(E)
      • Refutation
        • B(b);
    • Try
      • R(C);
      • Threat
        • R1(C)
      • Vars
        • B(b);SBLOCK::QAR(E)
        • S(c);N_GUARD::QAB(E),XB(b)
        • S(a);N_GUARD::B(A),XS(a)
        • S(a);N_GUARD::B(A)
      • Refutation
        • S(c);
    • Try
      • Q(E);CHECK,XB(b)
      • Vars
        • K(d);P-FLIGHT,P_SPINS(c),XS(D)::B(B),XS(c)
        • S(c);N_GUARD,XQ(E)::B(A)
      • Refutation
        • S(c);P_SPINS(c)
  • Actual
    • B(A);
    • Threat
      • B(A)
    • Vars
      • K(d);P-FLIGHT,P_SPINS(c),XS(D)::QAR(E)+B(A)
      • K(d);S_FLIGHT::QAR(E)+B(A),DCHECK
      • S(c);N_GUARD,XB(A)::QAB(E),XB(b)
      • B(b);SBLOCK::QAR(E)
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).