MESON Chess Problem Database

Problem Display
PID: 18242 (4N1K1/3pR3/6B1/pQpkb1nR/r7/3prn2/1B2N3/8 w - - 0 1)

Mansfield, Comins

4th HM., Problem (Zagreb), 1954

4N1K1/3pR3/6B1/pQpkb1nR/r7/3prn2/1B2N3/8

#2

8 + 10

3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Qb7#
    • 1...Rd4
      • 2.Sc3#
    • 1...Bd4
      • 2.Sf4#
    • 1...Bd6
      • 2.Sf6#
    • 1...Sd4
      • 2.Sc3#
    • 1...Se4
      • 2.Sf4#
      • 2.Bf7#
    • 1...Se6
      • 2.Rxd7#
    • 1...d6
      • 2.Sc7#
  • Tries
    • 1.Sf6+?
      • 1...Kd6
        • 2.Qxd7#
      • 1...Bxf6!
    • 1.Sc7+?
      • 1...Kd6
        • 2.Rxd7#
        • 2.Qxd7#
      • 1...Bxc7!
    • 1.Rxd7+?
      • 1...Bd6
        • 2.Sc7#
        • 2.Rxd6#
      • 1...Ke6!
    • 1.Qb3+?
      • 1...Rc4
        • 2.Qb7#
      • 1...c4
        • 2.Qb5#
      • 1...Kc6!
  • Keys
    • 1.Bd4!
      • threat
        • 2.Qxc5#
      • 1...Rxd4
        • 2.Sc3#
      • 1...Bxd4
        • 2.Sf4#
      • 1...Sxd4
        • 2.Sc3#
      • 1...Rc4
        • 2.Qb7#
      • 1...Bd6
        • 2.Sf6#
      • 1...Se4
        • 2.Bf7#
      • 1...Se6
        • 2.Rxd7#
      • 1...d6
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(d);SBLOCK::QAB(C)
    • R(d);SBLOCK,S_CUTB(h)::S(B)
    • B(h);N_GUARD,P_SPINS(i),S_CUTR(d)::S(B)
    • B(h);N_GUARD,P_SPINS(i),SBLOCK::S(G)
    • S(c);SBLOCK,S_CUTB(h)::S(B)
    • S(i);P_SPINB(h),SBLOCK::R(F),XP(j)
    • P(j);SBLOCK,S_CUTB(h)::S(G)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(g);N_SPINP(f),P-FLIGHT::QAR1(C),XP(j)
      • Refutation
        • B(h);P_SPINS(i),XS(G)
    • Try
      • S(G);CHECK
      • Refutation
        • B(h);P_SPINS(i),XS(G)
    • Try
      • R(F);CHECK,XP(j)
      • Refutation
        • K(g);N_SPINP(f),S_FLIGHT
    • Try
      • Q(C);CHECK,N_PINP(f)
      • Vars
        • R(d);P_SPINR(d),SBLOCK::QAB(C)
        • P(f);OGATEB,P_SPINP(f)::QAR2(C)
      • Refutation
        • K(g);S_FLIGHT
  • Actual
    • B(A);
    • Threat
      • QAR1(C),XP(f)
    • Vars
      • R(d);SBLOCK,XB(A)::S(B)
      • B(h);N_GUARD,P_SPINS(i),SBLOCK,XB(A)::S(B)
      • S(c);SBLOCK,XB(A)::S(B)
      • R(d);SBLOCK::QAB(C)
      • B(h);N_GUARD,P_SPINS(i),SBLOCK::S(G)
      • S(i);N_GUARD,P_SPINB(h),SBLOCK::B(E)
      • S(i);P_SPINB(h),SBLOCK::R(F),XP(j)
      • P(j);SBLOCK,S_CUTB(h)::S(G)
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).