MESON Chess Problem Database

Problem Display
PID: 70439 (b1B5/8/2n3R1/2Rpk3/K4p1q/3ppP1N/4N2Q/8 w - - 0 1)

Suesman, Walter B

Chess, 1951

b1B5/8/2n3R1/2Rpk3/K4p1q/3ppP1N/4N2Q/8

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qe1
      • 2.Qxf4#
    • 1...Qf2
      • 2.Qxf4#
    • 1...Qe7
      • 2.Qxf4#
    • 1...Qd8
      • 2.Qxf4#
    • 1...Qxh3
      • 2.Qxf4#
    • 1...Qh5
      • 2.Qxf4#
    • 1...Qh7
      • 2.Qxf4#
    • 1...Qh8
      • 2.Qxf4#
  • Keys
    • 1.Sexf4!
      • threat
        • 2.Rxd5#
      • 1...Qxf4+
        • 2.Qxf4#
      • 1...Kd4
        • 2.Se6#
      • 1...Qd8
        • 2.Se2#
      • 1...Sb4
        • 2.Qb2#
      • 1...Sd4
        • 2.Sxd3#
      • 1...Sa5
        • 2.Qb2#
      • 1...Sa7
        • 2.Qb2#
      • 1...Se7
        • 2.Qb2#
      • 1...Sb8
        • 2.Qb2#
      • 1...Sd8
        • 2.Qb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 9
    • REMOVED MATES = 7
  • Sets
    • Q(d);N_GUARD::QAB1(B),XP(c)
    • Q(d);N_GUARD,XS(D)::QAB1(B),XP(c)
  • Actual
    • S(A);P_PINP(e),P_SPINS(A),XP(c)
    • Threat
      • R1(F),XP(e)
    • Vars
      • Q(d);CHECK,OGATE,P_SPINQ(d),XS(A)::QAB1(B),XQ(d)
      • K(f);N_PINS(A),N_SPINP(e),S_FLIGHT::S(A)
      • Q(d);N_PINS(A)::QAB(B)+S(A)
      • S(g);N_GUARD,N_PINS(A)::QAB(B)
      • S(g);N_PINS(A),SBLOCK::QAB(B)+S(A),DCHECK,XP(a)
      • S(g);N_GUARD::QAB(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).