MESON Chess Problem Database

Problem Display
PID: 73711 (n7/B2N3B/1rp3nK/6p1/2Pk4/2Rb4/3P3b/7Q w - - 0 1)

Berghmans, Josef

Tijdschrift vd KNSB, 1938

n7/B2N3B/1rp3nK/6p1/2Pk4/2Rb4/3P3b/7Q

#2

8 + 8

3713 Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.Qd5#
  • Tries
    • 1.Bxb6+?
      • 1...c5
        • 2.Bxc5#
        • 2.Qd5#
      • 1...Sxb6!
    • 1.Qf3?
      • threat
        • 2.Qxd3#
        • 2.Qe3#
      • 1...Bg1
        • 2.Qxd3#
      • 1...Bf4
        • 2.Qxd3#
      • 1...Bb1
        • 2.Qe3#
      • 1...Bf1
        • 2.Qe3#
      • 1...Bc2
        • 2.Qe3#
      • 1...Be2
        • 2.Qe3#
      • 1...Be4
        • 2.Qf2#
        • 2.Qe3#
      • 1...Bf5
        • 2.Qe3#
      • 1...Sf4
        • 2.Qf2#
        • 2.Qe3#
      • 1...Se5
        • 2.Qf2#
        • 2.Qe3#
      • 1...Bxc4!
  • Keys
    • 1.Qxc6!
      • threat
        • 2.Qd5#
      • 1...Bxc4
        • 2.Qxc4#
      • 1...Be4
        • 2.Qc5#
      • 1...Sf4
        • 2.Qf6#
      • 1...Sh4
        • 2.Rxd3#
      • 1...Se5
        • 2.Qd6#
      • 1...Se7
        • 2.Rxd3#
      • 1...Sf8
        • 2.Rxd3#
      • 1...Sh8
        • 2.Rxd3#
      • 1...Sc7
        • 2.Bxb6#

This anticipates 45490(1945-1946)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 1
  • Sets
    • P(f);N_GUARD,N_SPINR(e)::QAR1(A)
  • Tries
    • Try
      • B(F);CHECK,XR(e)
      • Refutation
        • S(h);XB(F)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::QAR1(A),XB(b)
        • B(b);::QAB1(A)
      • Refutation
        • B(b);XP(D)
  • Actual
    • Q(A);XP(f)
    • Threat
      • QAR1(A)
    • Vars
      • B(b);OGATE,XP(D)::QAR1(A),XB(b)
      • B(b);SBLOCK::QAB1(A)
      • S(g);N_GUARD,P_PINQ(A),S_CUTB(a)::QAB(A)
      • S(g);P_PINQ(A)::R1(C),XB(b)
      • S(g);P_PINQ(A),S_CUTB(a)::QAR2(A)
      • S(h);N_GUARD::B(F),XR(e)
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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).