MESON Chess Problem Database

Problem Display
PID: 263738 (3R1K2/1b4P1/r2n2p1/4knQ1/1N3N2/qp4P1/2B1Pr1b/2BR4 w - - 0 1)

Rietveld, Johannes Jacob

Tijdschrift vd NSB, 1933

3R1K2/1b4P1/r2n2p1/4knQ1/1N3N2/qp4P1/2B1Pr1b/2BR4

#2

11 + 10

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qb2
      • 2.Bxb2#
    • 1...Qa4
      • 2.Bb2#
    • 1...Qa5
      • 2.Bb2#
    • 1...Rc6
      • 2.Rd5#
    • 1...Bd5
      • 2.Rxd5#
    • 1...Bc8
      • 2.Rd5#
  • Tries
    • 1.Sc6+?
      • 1...Rxc6
        • 2.Rd5#
      • 1...Bxc6!
    • 1.Bxf5?
      • threat
        • 2.Sxg6#
      • 1...Rxf4
        • 2.Bxf4#
      • 1...gxf5
        • 2.Qe7#
      • 1...Sc4
        • 2.Sd3#
        • 2.Bb1#
        • 2.Bc2#
        • 2.Bd3#
        • 2.Bxg6#
      • 1...Se4
        • 2.Sd3#
      • 1...Sb5
        • 2.Sd3#
        • 2.Bb1#
        • 2.Bc2#
        • 2.Bd3#
        • 2.Bxg6#
      • 1...Sf7
        • 2.Sd3#
      • 1...Sc8
        • 2.Sd3#
        • 2.Bb1#
        • 2.Bc2#
        • 2.Bd3#
        • 2.Bxg6#
      • 1...Se8
        • 2.Sd3#
        • 2.Bb1#
        • 2.Bc2#
        • 2.Bd3#
        • 2.Bxg6#
      • 1...Sxf5!
  • Keys
    • 1.Qxg6!
      • threat
        • 2.Qe6#
      • 1...Rxf4
        • 2.Bxf4#
      • 1...Sxg7
        • 2.Qxg7#
      • 1...Bd5
        • 2.Rxd5#
      • 1...Bc8
        • 2.Rd5#
      • 1...Sd4
        • 2.Sd3#
      • 1...Sc4
        • 2.Qxf5#
      • 1...Se4
        • 2.Sd3#
      • 1...Sb5
        • 2.Qxf5#
      • 1...Sf7
        • 2.Qxf5#
      • 1...Sc8
        • 2.Qxf5#
      • 1...Se8
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 4
  • Sets
    • Q(c);N_GUARD::B(A),XQ(c)
    • Q(c);N_GUARD::B(A)
    • R(g);S_CUTB(j)::R1(B)
    • B(j);N_GUARD::R1(B),XB(j)
    • B(j);N_GUARD::R1(B)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • R(g);XS(F)::R1(B)
      • Refutation
        • B(j);XS(F)
    • Try
      • B(C);XS(f)
      • Threat
        • S(G),XP(i)
      • Vars
        • R(a);OGATE,P_PINB(C),XS(G)::B(A),XR(a)
        • P(i);P_SPINP(i),SBLOCK,XB(C)::QAR2(H)
        • S(h);P_PINS(F)::S(G)
      • Refutation
        • S(h);P_PINS(F),P_SPINS(h),XB(C)
  • Actual
    • Q(H);N_PINS(f),XP(i)
    • Threat
      • QAR1(H)
    • Vars
      • R(a);OGATE,XS(G)::B(A),XR(a)
      • S(f);OGATE,P_PINS(G),XP(I)::QAB(H),XS(f)
      • B(j);N_GUARD::R1(B),XB(j)
      • B(j);N_GUARD::R1(B)
      • S(f);P_PINS(G),SBLOCK::S(F)
      • S(h);N_GUARD,P_PINS(F)::QAR1(H),XS(f)
      • S(h);P_PINS(F),SBLOCK::S(G)
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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).