MESON Chess Problem Database

Problem Display
PID: 74401 (3R4/8/1K2R1r1/3P1b1q/1p1k1pNp/1Pr2pN1/2p5/Q4B2 w - - 0 1)

van Dijk, Johannes

Tijdschrift vd KNSB, 1938

3R4/8/1K2R1r1/3P1b1q/1p1k1pNp/1Pr2pN1/2p5/Q4B2

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qh6
      • 2.Sxf5#
    • 1...Qh7
      • 2.Sxf5#
    • 1...Qh8
      • 2.Sxf5#
    • 1...Rxe6+
      • 2.dxe6#
  • Keys
    • 1.Qe1!
      • threat
        • 2.Qe5#
      • 1...Rc6+
        • 2.dxc6#
      • 1...Rxe6+
        • 2.dxe6#
      • 1...Bxg4
        • 2.Qe4#
      • 1...Bxe6
        • 2.Qe4#
      • 1...Qh8
        • 2.Sxf5#
      • 1...Re3
        • 2.Qxb4#
      • 1...Bd3
        • 2.Qf2#
      • 1...Be4
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 2
  • Sets
    • Q(i);N_GUARD::S(D),XB(h)
    • R(j);CHECK,OGATE,XR(H)::R(I)+P(F),XR(j)
  • Actual
    • Q(A);N_PINR(b)
    • Threat
      • QAB1(A)
    • Vars
      • R(b);CHECK,N_PINR(H),OGATE::R(I)+P(F),XR(b)
      • R(j);CHECK,OGATE,XR(H)::R(I)+P(F),XR(j)
      • B(h);N_GUARD,XS(E)::QAR1(A)
      • B(h);N_GUARD,XR(H)::QAR1(A)
      • Q(i);N_GUARD::S(D),XB(h)
      • R(b);OGATE::QAR2(A),XP(d)
      • B(h);S_CUTR(b)::QAB(A)
      • B(h);N_GUARD::QAR1(A),XB(h)
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).