MESON Chess Problem Database

Problem Display
PID: 254895 (bb1R1Nq1/4pn2/1r2r3/B2pp3/1P1k4/8/B1P2P2/K3Qn2 w - - 0 1)

Beunk, HJ

Probleemblad, 1946

bb1R1Nq1/4pn2/1r2r3/B2pp3/1P1k4/8/B1P2P2/K3Qn2

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb4
      • 2.Sxe6#
      • 2.Qxb4#
    • 1...Rb5
      • 2.Sxe6#
    • 1...Rbc6
      • 2.Rxd5#
    • 1...Rb7
      • 2.Sxe6#
      • 2.Rxd5#
    • 1...Rec6
      • 2.Rxd5#
    • 1...Bc6
      • 2.Sxe6#
      • 2.Bxb6#
    • 1...Bd6
      • 2.Sxe6#
    • 1...Sd2
      • 2.Qe3#
    • 1...Sh2
      • 2.Qe3#
    • 1...Se3
      • 2.Qxe3#
    • 1...Sg3
      • 2.Qe3#
    • 1...Sd6
      • 2.Bxb6#
  • Tries
    • 1.Qe4+?
      • 1...Kc3
        • 2.Qd3#
        • 2.b5#
      • 1...Kxe4!
  • Keys
    • 1.b5!
      • threat
        • 2.Qb4#
      • 1...Kc5
        • 2.Qb4#
      • 1...Rxb5
        • 2.Sxe6#
      • 1...Se3
        • 2.Qxe3#
      • 1...e4
        • 2.Qc3#
      • 1...Rbc6
        • 2.Rxd5#
      • 1...Rec6
        • 2.Rxd5#
      • 1...Bd6
        • 2.Sxe6#
      • 1...Sd2
        • 2.Qe3#
      • 1...Sd6
        • 2.Bxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(e);N_GUARD::S(I),XR(f)
    • R(e);S_CUTB(i)::R1(H),XP(c)
    • R(f);S_CUTB(i)::R1(H),XP(c)
    • B(j);N_SPINP(c),S_CUTR(e)::S(I),XR(f)
    • S(a);N_GUARD::QAB1(B)
    • S(a);N_GUARD::QAB1(B),XS(a)
    • S(h);N_SPINP(c),S_CUTR(f)::B(G),XR(e)
  • Tries
    • Try
      • Q(B);CHECK
      • Refutation
        • K(b);N_SPINP(c),P-FLIGHT,XQ(B)
  • Actual
    • P(F);
    • Threat
      • QAR2(B)
    • Vars
      • K(b);N_SPINP(c),S_FLIGHT::QAB1(B)
      • R(e);N_GUARD,XP(F)::S(I),XR(f)
      • S(a);N_GUARD::QAB1(B),XS(a)
      • P(d);SBLOCK::QAB1(B)
      • R(e);S_CUTB(i)::R1(H),XP(c)
      • R(f);S_CUTB(i)::R1(H),XP(c)
      • B(j);N_SPINP(c),S_CUTR(e)::S(I),XR(f)
      • S(a);N_GUARD::QAB1(B)
      • S(h);N_SPINP(c),S_CUTR(f)::B(G),XR(e)
HTML5 logo

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).