MESON Chess Problem Database

Problem Display
PID: 16749 (n7/2p4B/2K1Np2/bpQ1Nr2/3pk1bR/R1q3B1/2prpPpn/8 w - - 0 1)

Visserman, Eeltje

1/2 Prize, Tijdschrift vd KNSB 38. TT, 1942

n7/2p4B/2K1Np2/bpQ1Nr2/3pk1bR/R1q3B1/2prpPpn/8

#2

9 + 15

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.Qd5#
    • 1...Qb2
      • 2.Qd5#
    • 1...Qb4
      • 2.Qd5#
    • 1...Qxa3
      • 2.Qd5#
    • 1...Qd3
      • 2.Qd5#
    • 1...Qe3
      • 2.Qd5#
    • 1...Qf3
      • 2.Qd5#
    • 1...Qxg3
      • 2.Qd5#
    • 1...Qxc5+
      • 2.Sxc5#
    • 1...Sf1
      • 2.Rxg4#
    • 1...Sf3
      • 2.Rxg4#
  • Tries
    • 1.Rxc3?
      • threat
        • 2.Qd5#
      • 1...dxc3
        • 2.Qe3#
      • 1...Sb6!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Qxf5#
      • 1...Kd3
        • 2.Qxd4#
      • 1...Kf3
        • 2.Sxd2#
      • 1...Qxc4
        • 2.Bxf5#
      • 1...Qf3
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 10
  • Sets
    • Q(f);N_PINQ(E)::QAB1(E)
    • Q(f);N_PINQ(E),XR(B)::QAB1(E)
    • Q(f);N_PINQ(E),XB(C)::QAB1(E)
    • Q(f);CHECK,XQ(E)::S(H),XQ(f)
    • S(e);N_GUARD::R(D),XB(i)
  • Tries
    • Try
      • R(B);N_SPINQ(E),XQ(f)
      • Threat
        • QAB1(E)
      • Vars
        • P(g);OGATE,XR(B)::QAR1(E)
      • Refutation
        • S(o);
  • Actual
    • S(F);N_SPINQ(E)
    • Threat
      • QAB1(E),XR(l)
    • Vars
      • K(h);N_SPINB(i),P_SPINQ(f),S_FLIGHT::QAR1(E),XP(g)
      • K(h);N_SPINB(i),N_SPINR(l),P_SPINQ(f),S_FLIGHT::S(F),XR(b)
      • Q(f);P_PINQ(E),XS(F)::B(I),XR(l)
      • Q(f);::QAB1(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).