MESON Chess Problem Database

Problem Display
PID: 7004 (Q4R2/2p1prq1/1bN1B3/3n1R2/Kp2kpn1/2p3rN/2P1P3/2B5 w - - 0 1)

Drese, Gerardus Hendrikus

4th Prize, Munkassakk, 1935

Q4R2/2p1prq1/1bN1B3/3n1R2/Kp2kpn1/2p3rN/2P1P3/2B5

#2

10 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.Sg5#
    • 1...Qe5
      • 2.Sg5#
    • 1...Qxf8
      • 2.Sg5#
    • 1...Qh8
      • 2.Sg5#
    • 1...Qg5
      • 2.Sxg5#
    • 1...Qh7
      • 2.Sg5#
    • 1...Rd3
      • 2.cxd3#
    • 1...Rxf5
      • 2.Bxf5#
    • 1...Sge3
      • 2.Sf2#
    • 1...Sgf6
      • 2.Re5#
    • 1...Sdf6
      • 2.Rxf4#
  • Keys
    • 1.Qd8!
      • threat
        • 2.Qxd5#
      • 1...Rxf5
        • 2.Bxf5#
      • 1...Qe5
        • 2.Sg5#
      • 1...Qd4
        • 2.Sg5#
      • 1...Rd3
        • 2.cxd3#
      • 1...Sge3
        • 2.Sf2#
      • 1...Sgf6
        • 2.Re5#
      • 1...Sde3
        • 2.Qd3#
      • 1...Sdf6
        • 2.Rxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • Q(l);N_GUARD::S(D)
    • Q(l);N_GUARD,XR(J)::S(D)
    • Q(l);N_GUARD::S(D),XQ(l)
    • R(b);OGATE::P(B),XR(b)
    • R(k);OGATE,XR(F)::B(H),XR(k)
    • S(f);N_GUARD,S_CUTB(h)::S(D)
    • S(f);N_GUARD,S_CUTQ(l)::R1(F)
    • S(g);N_GUARD,S_CUTR(k)::R1(F),XP(e)
  • Actual
    • Q(I);
    • Threat
      • QAB1(I),XS(g)
    • Vars
      • R(k);OGATE,XR(F)::B(H),XR(k)
      • Q(l);N_GUARD::S(D)
      • R(b);OGATE::P(B),XR(b)
      • S(f);N_GUARD,S_CUTB(h)::S(D)
      • S(f);N_GUARD,S_CUTQ(l)::R1(F)
      • S(g);OGATE::QAB1(I)
      • S(g);N_GUARD,S_CUTR(k)::R1(F),XP(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).