MESON Chess Problem Database

Problem Display
PID: 6230 (B3NQ2/3R1P1p/pk5r/b2pPP1p/K1pr2p1/2Npq3/8/7b w - - 0 1)

Nietvelt, Gustaaf Josephus

Chess Amateur (The), 1928

B3NQ2/3R1P1p/pk5r/b2pPP1p/K1pr2p1/2Npq3/8/7b

#2

9 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Sxd5#
    • 1...Rc6
      • 2.Rb7#
    • 1...Rd6
      • 2.Qxd6#
    • 1...Bb4
      • 2.Qxb4#
  • Tries
    • 1.Sd6?
      • threat
        • 2.Sc8#
      • 1...Rxd6
        • 2.Qxd6#
      • 1...Kc5!
    • 1.Qxh6+?
      • 1...Kc5
        • 2.Qc6#
        • 2.Qd6#
        • 2.f8Q#
        • 2.f8B#
      • 1...Qxh6!
  • Keys
    • 1.Rc7!
      • threat
        • 2.Qc5#
      • 1...Re4
        • 2.Sxd5#
      • 1...Rf4
        • 2.Qxh6#
      • 1...Rc6
        • 2.Rb7#
      • 1...Rd6
        • 2.Qxd6#
      • 1...Bb4
        • 2.Qxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(e);N_GUARD,S_CUTB(a)::S(A),XP(h)
    • R(l);SBLOCK::R1(E)
    • R(l);N_GUARD::QAR2(I),XR(l)
    • B(g);N_GUARD::QAR2(I),XB(g)
  • Tries
    • Try
      • S(H);
      • Threat
        • S(H)
      • Vars
        • R(l);OGATE,XS(H)::QAR2(I),XR(l)
      • Refutation
        • K(k);S_FLIGHT
    • Try
      • Q(I);CHECK,XR(l)
      • Refutation
        • Q(c);XQ(I)
  • Actual
    • R(E);
    • Threat
      • QAB1(I)
    • Vars
      • R(e);N_GUARD,S_CUTB(a)::S(A),XP(h)
      • R(e);S_CUTQ(c)::QAR(I),XR(l)
      • R(l);SBLOCK::R1(E)
      • R(l);N_GUARD::QAR2(I),XR(l)
      • B(g);N_GUARD::QAR2(I),XB(g)
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).