MESON Chess Problem Database

Problem Display
PID: 73630 (3bR3/5N1K/1qP1r3/3b1n1Q/R1n1kp2/2Pp1p1N/3P1rP1/6B1 w - - 0 1)

Hassebroek, H

Tijdschrift vd KNSB, 1942

3bR3/5N1K/1qP1r3/3b1n1Q/R1n1kp2/2Pp1p1N/3P1rP1/6B1

#2

11 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qa5
      • 2.Sxf2#
    • 1...Qc7
      • 2.Sxf2#
    • 1...Qb1
      • 2.Sxf2#
    • 1...Qb2
      • 2.Sxf2#
    • 1...Qb3
      • 2.Sxf2#
    • 1...Qb4
      • 2.Sxf2#
    • 1...Qb5
      • 2.Sxf2#
    • 1...Qa6
      • 2.Sxf2#
    • 1...Qxc6
      • 2.Sxf2#
    • 1...Qb7
      • 2.Sxf2#
    • 1...Qb8
      • 2.Sxf2#
    • 1...Rxd2
      • 2.Qxf3#
      • 2.gxf3#
    • 1...Re2
      • 2.Qxf3#
      • 2.gxf3#
    • 1...Re5
      • 2.Rxe5#
    • 1...Re7
      • 2.Sg5#
    • 1...Bg5
      • 2.Shxg5#
    • 1...Bc7
      • 2.Shg5#
    • 1...Se3
      • 2.Sxf2#
      • 2.Sd6#
    • 1...Sg3
      • 2.Sd6#
    • 1...Sd4
      • 2.Sxf2#
    • 1...Sh4
      • 2.Sd6#
    • 1...Sd6
      • 2.Sxd6#
    • 1...Sh6
      • 2.Sd6#
    • 1...Sg7
      • 2.Sd6#
  • Tries
    • 1.Rxc4+?
      • 1...Qd4
        • 2.Sxf2#
      • 1...Sd4
        • 2.Sxf2#
        • 2.Sd6#
        • 2.Qg6#
      • 1...Bxc4!
  • Keys
    • 1.g4!
      • threat
        • 2.Qxf5#
      • 1...fxg4 ep
        • 2.Qg4#
      • 1...Bg5
        • 2.Shxg5#
      • 1...Se3
        • 2.Sxf2#
        • 2.Sd6#
      • 1...Sg3
        • 2.Sd6#
      • 1...Sd4
        • 2.Sxf2#
      • 1...Sh4
        • 2.Sd6#
      • 1...Sd6
        • 2.Sxd6#
      • 1...Sh6
        • 2.Sd6#
      • 1...Se7
        • 2.Shg5#
      • 1...Sg7
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 14
  • Sets
    • Q(i);N_GUARD::S(E),XR(a)
    • Q(i);N_GUARD,P_PINS(I)::S(E),XR(a)
    • Q(i);N_GUARD,N_SPINS(d)::S(E),XR(a)
    • Q(i);N_GUARD,XP(H)::S(E),XR(a)
    • R(j);OGATE::R1(K),XR(j)
    • R(j);P_PINS(I),S_CUTB(k)::S(E)
    • B(k);N_GUARD::S(E),XB(k)
    • B(k);N_GUARD::S(E)
    • S(h);N_GUARD::S(I)
    • S(h);N_SPINS(d),S_CUTQ(i)::S(E),XR(a)
    • S(h);N_GUARD::S(I),XS(h)
  • Tries
    • Try
      • R(F);CHECK,XS(d)
      • Vars
        • Q(i);P_SPINQ(i)::S(E),XR(a)
      • Refutation
        • B(g);XR(F)
  • Actual
    • P(C);
    • Threat
      • QAB1(G),XS(h)
    • Vars
      • P(f);EP,OGATE,XP(C)::QAR2(G)
      • B(k);N_GUARD::S(E),XB(k)
      • S(h);N_GUARD::S(I)
      • S(h);N_SPINS(d),S_CUTQ(i)::S(E),XR(a)
      • S(h);N_GUARD::S(I),XS(h)
      • S(h);N_SPINR(j),S_CUTB(k)::S(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).