MESON Chess Problem Database

Problem Display
PID: 73695 (3N4/7p/3N4/2Pkppn1/1R1P1pQ1/2n5/2P1rP2/q2R1B1K w - - 0 1)

Taale, Cornelius J

Tijdschrift vd KNSB, 1938

3N4/7p/3N4/2Pkppn1/1R1P1pQ1/2n5/2P1rP2/q2R1B1K

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc2
      • 2.Bc4#
    • 1...Rxf2
      • 2.Bc4#
    • 1...Re3
      • 2.Bc4#
    • 1...Re4
      • 2.Bc4#
    • 1...Sb1
      • 2.c4#
    • 1...Sa2
      • 2.c4#
    • 1...Sa4
      • 2.c4#
    • 1...Sce4
      • 2.c4#
    • 1...Sb5
      • 2.c4#
    • 1...Sf3
      • 2.Qg8#
    • 1...Sh3
      • 2.Qg8#
    • 1...Sge4
      • 2.Qg8#
    • 1...e4
      • 2.Qxf5#
  • Tries
    • 1.Qxe2?
      • threat
        • 2.Qc4#
        • 2.Qxe5#
      • 1...Sxe2
        • 2.c4#
      • 1...Qa2
        • 2.Qxe5#
      • 1...Qa6
        • 2.Qxe5#
      • 1...Sce4
        • 2.Qc4#
        • 2.c4#
      • 1...Sf3
        • 2.Qc4#
      • 1...Sge4
        • 2.Qc4#
      • 1...Sf7
        • 2.Qc4#
      • 1...e4
        • 2.Qc4#
      • 1...exd4!
  • Keys
    • 1.Se4!
      • threat
        • 2.Sf6#
      • 1...Kxe4
        • 2.d5#
      • 1...Rxe4
        • 2.Bc4#
      • 1...Scxe4
        • 2.c4#
      • 1...Sgxe4
        • 2.Qg8#
      • 1...exd4
        • 2.Qxf5#
      • 1...fxe4
        • 2.Qd7#
      • 1...Qa6
        • 2.Sxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 10
  • Sets
    • R(b);OGATE,XP(D)::B(B)
    • R(b);OGATE,XP(E)::B(B)
    • R(b);OGATE::B(B)
    • S(c);OGATE::P(D)
    • S(h);OGATE::QAB(H)
    • P(f);OGATEB::QAR2(H),XP(g)
  • Tries
    • Try
      • Q(H);XR(b)
      • Threat
        • DUALS(2)
      • Vars
        • S(c);OGATE,XQ(H)::P(D)
        • Q(a);::QAR1(H),XP(f)
        • S(h);::QAB1(H)
        • P(f);::QAB1(H)
      • Refutation
        • P(f);P_SPINP(f),XP(G)
  • Actual
    • S(J);
    • Threat
      • S(J)
    • Vars
      • K(e);OGATE,P_SPINP(d),S_FLIGHT,XS(J)::R(F)+P(G)
      • R(b);OGATE,SBLOCK,XS(J)::B(B)
      • S(c);OGATE,SBLOCK,XS(J)::P(D)
      • S(h);OGATE,SBLOCK,XS(J)::QAB(H)
      • P(f);OGATEB,P_SPINP(f),XP(G)::QAR2(H),XP(g)
      • P(g);OGATE,SBLOCK,XS(J)::QAR2(H)
      • Q(a);N_GUARD::S(J),XS(c)
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).