MESON Chess Problem Database

Problem Display
PID: 17845 (5qn1/1r6/3N2Q1/1pRPk3/8/2P2p1b/1K1N4/2B5 w - - 0 1)

Visserman, Eeltje

Jaarboek, 1951

5qn1/1r6/3N2Q1/1pRPk3/8/2P2p1b/1K1N4/2B5

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.S2c4#
    • 1...Qxd6
      • 2.Sxf3#
    • 1...Qh6
      • 2.Sxf3#
    • 1...Qe7
      • 2.Sxf3#
    • 1...Qg7
      • 2.Sxf3#
    • 1...Qa8
      • 2.Sxf3#
    • 1...Qb8
      • 2.Sxf3#
    • 1...Qc8
      • 2.Sxf3#
    • 1...Qd8
      • 2.Sxf3#
    • 1...Qe8
      • 2.Sxf3#
    • 1...Bf5
      • 2.Sxf3#
    • 1...Sf6
      • 2.Qg3#
    • 1...b4
      • 2.S2c4#
  • Tries
    • 1.S6c4+?
      • 1...Kf4
        • 2.Sb1#
        • 2.Sf1#
        • 2.Sb3#
        • 2.Se4#
      • 1...bxc4+!
    • 1.Qe6+?
      • 1...Kf4
        • 2.Sf1#
        • 2.S2e4#
      • 1...Bxe6!
  • Keys
    • 1.Se8!
      • threat
        • 2.Qe4#
      • 1...Kf4
        • 2.Sc4#
      • 1...Qxe8
        • 2.Sxf3#
      • 1...Qf4
        • 2.d6#
      • 1...Qf5
        • 2.Qd6#
      • 1...Bf5
        • 2.Qg3#
      • 1...Sf6
        • 2.Sxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 9
  • Sets
    • K(d);S_FLIGHT::B(A)+S(C)
    • Q(f);N_GUARD,XS(G)::S(C),XP(a)
    • Q(f);N_GUARD::S(C),XP(a)
    • B(b);S_CUTQ(f)::S(C),XP(a)
    • S(g);SBLOCK,S_CUTQ(f)::QAB(H)
    • P(c);N_GUARD::S(C)
  • Tries
    • Try
      • S(G);CHECK
      • Refutation
        • P(c);CHECK,XS(G)
    • Try
      • Q(H);CHECK
      • Refutation
        • B(b);XQ(H)
  • Actual
    • S(G);
    • Threat
      • QAR1(H)
    • Vars
      • K(d);S_FLIGHT::B(A)+S(C)
      • Q(f);N_GUARD,XS(G)::S(C),XP(a)
      • Q(f);SBLOCK::R(E)+P(F)
      • Q(f);N_GUARD,SBLOCK::QAB1(H)
      • B(b);SBLOCK,S_CUTQ(f)::QAB(H)
      • S(g);S_CUTQ(f)::S(C),XP(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).