MESON Chess Problem Database

Problem Display
PID: 237709 (2N5/1B1pN1K1/1Pr2p1Q/2r1kP2/2p1P1p1/B1Pn2p1/3R1nP1/5R2 w - - 0 1)

Barnes, Barry Peter

Arbejder-Skak, 1959

2N5/1B1pN1K1/1Pr2p1Q/2r1kP2/2p1P1p1/B1Pn2p1/3R1nP1/5R2

#2

13 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe4
      • 2.Re2#
    • 1...Rxb6
      • 2.Sg6#
    • 1...Rd6
      • 2.Sg6#
    • 1...Re6
      • 2.Sg6#
    • 1...Rc7
      • 2.Sg6#
  • Tries
    • 1.Qe3?
      • threat
        • 2.Sg6#
      • 1...Sxe4
        • 2.Qd4#
      • 1...Sf4
        • 2.Qd4#
      • 1...Rxc8!
  • Keys
    • 1.Sd6!
      • 1...Kxd6
        • 2.Qxf6#
      • 1...Rxb6
        • 2.Sf7#
      • 1...Rxd6
        • 2.Sg6#
      • 1...Sxe4
        • 2.Sf7#
      • 1...Ra5
        • 2.Sg6#
      • 1...Rb5
        • 2.Sg6#
      • 1...Rd5
        • 2.Sg6#
      • 1...Rc7
        • 2.Sf7#
      • 1...Rc8
        • 2.Sf7#
      • 1...Sd1
        • 2.Qxf6#
      • 1...Sh1
        • 2.Qxf6#
      • 1...Sh3
        • 2.Qxf6#
      • 1...Sc1
        • 2.Sg6#
      • 1...Se1
        • 2.Sg6#
      • 1...Sb2
        • 2.Sg6#
      • 1...Sb4
        • 2.Sg6#
      • 1...Sf4
        • 2.Qxf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 14
    • REMOVED MATES = 2
  • Sets
    • K(g);OGATEB,P-FLIGHT,P_SPINR(h),XP(F)::R(B)
    • R(h);XP(H)::S(K)
    • R(h);::S(K)
  • Tries
    • Try
      • Q(I);
      • Threat
        • S(K)
      • Vars
        • S(a);P_SPINS(a),XP(F)::QAB1(I)
        • S(b);SBLOCK::QAB1(I)
      • Refutation
        • R(h);XS(M)
  • Actual
    • S(M);
    • Vars
      • K(g);P_SPINP(i),P_SPINR(f),P_SPINS(b),S_FLIGHT,XS(M)::QAR2(I),XP(i)
      • R(h);XP(H)::S(M)
      • R(h);SBLOCK,XS(M)::S(K)
      • S(a);SBLOCK,XP(F)::S(M)
      • R(f);::S(K)
      • R(h);::S(M)
      • S(a);::QAB1(I),XP(i)
      • S(b);::S(K)
      • S(b);SBLOCK::QAB1(I),XP(i)
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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).