MESON Chess Problem Database

Problem Display
PID: 144 (1N3K2/1p2BP2/nN2k3/R3p3/1p2P2p/1r2Q2r/2p5/2q1n1b1 w - - 0 1)

Mansfield, Comins

5th HM., American Chess Bulletin, 1950

1N3K2/1p2BP2/nN2k3/R3p3/1p2P2p/1r2Q2r/2p5/2q1n1b1

#2

8 + 12

3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Qb2
      • 2.Qh6#
    • 1...Qa3
      • 2.Qh6#
    • 1...Qa1
      • 2.Qh6#
    • 1...Qb1
      • 2.Qh6#
    • 1...Qd1
      • 2.Qh6#
    • 1...Rb1
      • 2.Qxh3#
    • 1...Rb2
      • 2.Qxh3#
    • 1...Rh1
      • 2.Qxb3#
    • 1...Rh2
      • 2.Qxb3#
    • 1...Sd3
      • 2.Qxh3#
    • 1...Sf3
      • 2.Qxb3#
  • Tries
    • 1.Sc6?
      • threat
        • 2.Sd8#
        • 2.Rxe5#
      • 1...Qb2
        • 2.Sd8#
        • 2.Qh6#
      • 1...Qd2
        • 2.Rxe5#
      • 1...Qa1
        • 2.Sd8#
        • 2.Qh6#
      • 1...Qd1
        • 2.Rxe5#
        • 2.Qh6#
      • 1...Rd3
        • 2.Rxe5#
      • 1...Bh2
        • 2.Sd8#
      • 1...Sd3
        • 2.Sd8#
        • 2.Qxh3#
      • 1...Sf3
        • 2.Sd8#
        • 2.Qxb3#
      • 1...Sc5
        • 2.Sd8#
      • 1...bxc6!
    • 1.S8d7?
      • threat
        • 2.Rxe5#
      • 1...Qb2
        • 2.Qh6#
      • 1...Qa1
        • 2.Qh6#
      • 1...Sd3
        • 2.Qxh3#
      • 1...Sf3
        • 2.Qxb3#
      • 1...Sc5
        • 2.Sxc5#
      • 1...Bh2!
  • Keys
    • 1.S6d7!
      • threat
        • 2.Rxe5#
      • 1...Sxb8
        • 2.Sc5#
      • 1...Qb2
        • 2.Qh6#
      • 1...Qa1
        • 2.Qh6#
      • 1...Bh2
        • 2.Qb6#
      • 1...Sd3
        • 2.Qxh3#
      • 1...Sf3
        • 2.Qxb3#
      • 1...Sc5
        • 2.Sxc5#
      • 1...b5
        • 2.Rxa6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • Q(a);N_GUARD::QAR(A)
    • R(e);N_GUARD::QAB(A),XR(f)
    • R(f);N_GUARD::QAB(A),XR(e)
    • S(b);S_CUTR(e)::QAB(A),XR(f)
    • S(b);S_CUTR(f)::QAB(A),XR(e)
  • Tries
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);::R1(C),XP(i)
        • R(e);::R1(C),XP(i)
        • B(c);::S(G)
        • S(j);::S(G)
      • Refutation
        • P(l);XS(G)
    • Try
      • S(G);
      • Threat
        • R1(C),XP(i)
      • Vars
        • Q(a);N_GUARD::QAR(A)
        • S(b);S_CUTR(e)::QAB(A),XR(f)
        • S(b);S_CUTR(f)::QAB(A),XR(e)
        • S(j);N_GUARD::S(G),XS(j)
      • Refutation
        • B(c);
  • Actual
    • S(D);
    • Threat
      • R1(C),XP(i)
    • Vars
      • S(j);N_GUARD,XS(G)::S(D)
      • Q(a);N_GUARD::QAR(A)
      • B(c);N_GUARD::QAR(A)
      • S(b);S_CUTR(e)::QAB(A),XR(f)
      • S(b);S_CUTR(f)::QAB(A),XR(e)
      • S(j);N_GUARD::S(D),XS(j)
      • P(l);N_GUARD::R(C),XS(j)
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).