MESON Chess Problem Database

Problem Display
PID: 42291 (3N4/qp6/rR1p4/3kn3/2N1p3/pP2Qp1p/B3rb1P/B3R1nK w - - 0 1)

Mansfield, Comins

Themes-64, 1968

3N4/qp6/rR1p4/3kn3/2N1p3/pP2Qp1p/B3rb1P/B3R1nK

#2

10 + 13

4054 Complete Mansfield/III 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Qb8
      • 2.Rb5#
    • 1...Qa8
      • 2.Rb5#
    • 1...Ra4
      • 2.Rxd6#
    • 1...Ra5
      • 2.Rxd6#
    • 1...Bxe1
      • 2.Qd4#
    • 1...Bg3
      • 2.Qd4#
    • 1...Bh4
      • 2.Qd4#
    • 1...Sxc4
      • 2.bxc4#
  • Tries
    • 1.Rd1+?
      • 1...Sd3
        • 2.Qg5#
      • 1...Rd2!
  • Keys
    • 1.b4!
      • 1...Qxb6
        • 2.Sxb6#
      • 1...Rxe1
        • 2.Sxe5#
      • 1...Rxa2
        • 2.Qxe4#
      • 1...Rxe3
        • 2.Sxe3#
      • 1...Rxb6
        • 2.Sxb6#
      • 1...Bxe1
        • 2.Qd4#
      • 1...Bxe3
        • 2.Sxe3#
      • 1...Sxc4
        • 2.Qg5#
      • 1...Qb8
        • 2.Rb5#
      • 1...Qa8
        • 2.Rb5#
      • 1...Rb2
        • 2.Qxe4#
      • 1...Rc2
        • 2.Qxe4#
      • 1...Rd2
        • 2.Qxe4#
      • 1...Ra4
        • 2.Rxd6#
      • 1...Ra5
        • 2.Rxd6#
      • 1...Bg3
        • 2.Qd4#
      • 1...Bh4
        • 2.Qd4#
      • 1...Sd3
        • 2.Sd2#
      • 1...Sg4
        • 2.Sd2#
      • 1...Sc6
        • 2.Sd2#
      • 1...Sg6
        • 2.Sd2#
      • 1...Sd7
        • 2.Sd2#
      • 1...Sf7
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 15
    • REMOVED MATES = 0
  • Sets
    • Q(l);N_GUARD::R(I)
    • R(j);N_GUARD::R1(I),XP(k)
    • B(c);N_GUARD,XR(B)::QAR1(G)
    • B(c);N_GUARD::QAR1(G)
    • S(i);OGATE,XS(H)::P(F),XS(i)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • S(i);P_SPINS(i),S_CUTB(c),S_CUTR(b)::QAR(G)
      • Refutation
        • R(b);P_SPINR(b)
  • Actual
    • P(F);
    • Vars
      • Q(l);XR(I)::B(D)+S(H),DCHECK,XQ(l)
      • R(b);N_GUARD,XR(B)::B(D)+S(H),XS(i)
      • R(b);N_GUARD,XB(D)::QAB1(G),XP(g)
      • R(b);XQ(G)::B(D)+S(H),DCHECK,XR(b)
      • R(j);XR(I)::B(D)+S(H),DCHECK,XR(j)
      • B(c);N_GUARD,XR(B)::QAR1(G)
      • B(c);XQ(G)::B(D)+S(H),DCHECK,XB(c)
      • S(i);OGATEB,P_SPINS(i),XS(H)::QAR(G)
      • Q(l);N_GUARD::R(I)
      • R(b);N_GUARD::QAB1(G),XP(g)
      • R(j);N_GUARD::R1(I),XP(k)
      • B(c);N_GUARD::QAR1(G)
      • S(i);N_GUARD::B(D)+S(H)
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).