MESON Chess Problem Database

Problem Display
PID: 66334 (N1r2B2/5Q1K/2kP3p/R1n5/p3PN2/b1np4/pq4B1/1bRr4 w - - 0 1)

Drese, Gerardus Hendrikus

Tijdschrift vd NSB, 1931

N1r2B2/5Q1K/2kP3p/R1n5/p3PN2/b1np4/pq4B1/1bRr4

#2

10 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Rc7
      • 2.Qxc7#
    • 1...Rxa8
      • 2.Qc7#
    • 1...Rb8
      • 2.Qc7#
    • 1...Rd8
      • 2.Qc7#
    • 1...Re8
      • 2.Qc7#
    • 1...Rxf8
      • 2.Qc7#
    • 1...Se2
      • 2.e5#
    • 1...S3xe4
      • 2.Bxe4#
    • 1...Sb5
      • 2.Ra6#
    • 1...Sd5
      • 2.exd5#
    • 1...S5xe4
      • 2.Bxe4#
    • 1...Sd7
      • 2.Qd5#
  • Tries
    • 1.e5+?
      • 1...S3e4
        • 2.Bxe4#
      • 1...Sd5
        • 2.Bxd5#
      • 1...S5e4
        • 2.Bxe4#
      • 1...Qxg2!
  • Keys
    • 1.Sg6!
      • threat
        • 2.Se5#
      • 1...Rxa8
        • 2.Qc7#
      • 1...Rxf8
        • 2.Qc7#
      • 1...S3xe4
        • 2.Bxe4#
      • 1...Rc7
        • 2.Qxc7#
      • 1...Sd7
        • 2.Qd5#
      • 1...Re8
        • 2.Qc7#
      • 1...Se2
        • 2.e5#
      • 1...Sb5
        • 2.Ra6#
      • 1...Sd5
        • 2.exd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • R(l);N_GUARD,P_PINQ(G)::QAR1(G),XR(l)
    • R(l);N_GUARD,XS(I)::QAR1(G)
    • R(l);N_GUARD::QAR1(G)
    • R(l);N_GUARD,XB(J)::QAR1(G)
    • S(f);N_GUARD,P_SPINS(i),S_CUTQ(d)::B(B)+P(C)
    • S(f);OGATE,P_SPINS(f),XP(C)::B(B),XS(f)
    • S(f);P_SPINS(i),SBLOCK,S_CUTQ(d)::R(E)
    • S(f);OGATE,P_SPINS(i)::P(C),XS(f)
    • S(i);OGATE,P_SPINS(f),XP(C)::B(B),XS(i)
    • S(i);P_SPINS(f),SBLOCK::QAB1(G)
  • Tries
    • Try
      • P(C);CHECK
      • Vars
        • S(f);N_GUARD,P_SPINS(f),S_CUTS(i)::B(B),XS(f)
        • S(f);N_GUARD,P_SPINS(i)::B(B),XS(f)
        • S(i);N_GUARD,P_SPINS(f)::B(B),XS(i)
      • Refutation
        • Q(d);XB(B)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • R(l);N_GUARD,XS(I)::QAR1(G)
      • R(l);N_GUARD,XB(J)::QAR1(G)
      • S(f);OGATE,P_SPINS(f),XP(C)::B(B),XS(f)
      • R(l);N_GUARD,P_PINQ(G)::QAR1(G),XR(l)
      • S(i);P_SPINS(f),SBLOCK::QAB1(G)
      • R(l);N_GUARD::QAR1(G)
      • S(f);N_GUARD,P_SPINS(i),S_CUTQ(d)::B(B)+P(C)
      • S(f);P_SPINS(i),SBLOCK,S_CUTQ(d)::R(E)
      • S(f);OGATE,P_SPINS(i)::P(C),XS(f)
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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).