MESON Chess Problem Database

Problem Display
PID: 74051 (8/8/8/P5Q1/1nBp4/2kP3R/2N5/1KR1n3 w - - 0 1)

Albarda, Johannes

2nd Prize, Probleemblad 081. TT, 1950

8/8/8/P5Q1/1nBp4/2kP3R/2N5/1KR1n3

#2

8 + 4

3310 2345 Chess Problems 1997

SOLUTION

  • SOUND
  • Tries
    • 1.Sa3+?
      • 1...Sec2
        • 2.Sb5#
      • 1...Sbc2!
    • 1.Se3+?
      • 1...Sec2
        • 2.Sd1#
      • 1...Sbc2
        • 2.Sd5#
      • 1...Kd2!
    • 1.Sxb4+?
      • 1...Sc2
        • 2.Sa2#
        • 2.Sd5#
      • 1...Kxb4!
    • 1.Sxd4+?
      • 1...Kxd4
        • 2.Rh4#
        • 2.Qe3#
      • 1...Sec2
        • 2.Se2#
        • 2.Sb5#
      • 1...Sbc2!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Qxb4#
        • 2.Qxe1#
      • 1...Kd2
        • 2.Qxe1#
      • 1...Sexc2
        • 2.Qe1#
      • 1...Sexd3
        • 2.Qxb4#
      • 1...Sbxc2
        • 2.Qxe1#
      • 1...Sbxd3
        • 2.Qb4#
      • 1...Sg2
        • 2.Qxb4#
      • 1...Sf3
        • 2.Qxb4#
      • 1...Sa2
        • 2.Qxe1#
      • 1...Sd5
        • 2.Qxe1#
      • 1...Sa6
        • 2.Qxe1#
      • 1...Sc6
        • 2.Qxe1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • S(a);P_SPINS(a)::S(C)
      • Refutation
        • S(c);P_SPINS(c)
    • Try
      • S(C);CHECK
      • Vars
        • S(a);P_SPINS(a)::S(C)
        • S(c);P_SPINS(c)::S(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(C);CHECK,XS(c)
      • Refutation
        • K(b);S_FLIGHT,XS(C)
    • Try
      • S(C);CHECK,XP(d)
      • Refutation
        • S(c);P_SPINS(c)
  • Actual
    • Q(H);
    • Threat
      • DUALS(2)
    • Vars
      • K(b);S_FLIGHT::QAB1(H),XS(a)
      • S(a);P_SPINS(a),XS(C)::QAB(H)
      • S(a);P_SPINS(a),XP(D)::QAB1(H),XS(c)
      • S(c);P_SPINS(c),XS(C)::QAB(H),XS(a)
      • S(c);P_SPINS(c),XP(D)::QAB1(H)
      • S(a);::QAB1(H),XS(c)
      • S(c);::QAB(H),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).