MESON Chess Problem Database

Problem Display
PID: 10056 (8/K7/BNp4p/1R5r/3BpQ2/3k1b2/2n5/1qR5 w - - 0 1)

Mansfield, Comins

2nd Prize, Shakhmaty v SSSR, 1961

8/K7/BNp4p/1R5r/3BpQ2/3k1b2/2n5/1qR5

#2

7 + 8

3749 FIDE Album (1959-1961) 1966
3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd4
      • 2.Qd2#
    • 1...Qxc1
      • 2.Rd5#
    • 1...Rh1
      • 2.Rb4#
    • 1...Rh2
      • 2.Rb4#
    • 1...Rh3
      • 2.Rb4#
    • 1...Rh4
      • 2.Rb4#
    • 1...Sa1
      • 2.Qe3#
    • 1...Se1
      • 2.Qe3#
    • 1...Sa3
      • 2.Qe3#
    • 1...Se3
      • 2.Qxe3#
    • 1...Sb4
      • 2.Qe3#
    • 1...Sxd4
      • 2.Rb3#
  • Tries
    • 1.Rd1+?
      • 1...Ke2
        • 2.Qd2#
      • 1...Qxd1
        • 2.Rd5#
      • 1...Bxd1!
    • 1.Rf5+?
      • 1...Kxd4
        • 2.Qd2#
      • 1...Qb5!
    • 1.Rg5+?
      • 1...Kxd4
        • 2.Qd2#
      • 1...Qb5!
    • 1.Rxh5+?
      • 1...Kxd4
        • 2.Qd2#
      • 1...Qb5!
  • Keys
    • 1.Bc3!
      • threat
        • 2.Qd2#
      • 1...Ke2
        • 2.Qd2#
      • 1...Kxc3
        • 2.Qe3#
      • 1...Qxc1
        • 2.Rc5#
      • 1...Rh2
        • 2.Rb3#
      • 1...Se3
        • 2.Rd5#
      • 1...e3
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • K(c);P-FLIGHT,P_SPINP(e),XB(B)::QAR2(C)
    • Q(a);N_GUARD,XR(A)::B(E)+R(D)
    • R(f);N_GUARD::B(E)+R(D)
    • S(b);N_GUARD::QAR1(C)
    • S(b);N_GUARD::QAR1(C),XS(b)
    • S(b);SBLOCK,XB(B)::B(E)+R(D),DCHECK
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR1(C)
        • Q(a);XR(A)::B(E)+R(D)
      • Refutation
        • B(d);XR(A)
    • Try
      • R(D);CHECK
      • Vars
        • K(c);P-FLIGHT,P_SPINP(e),XB(B)::QAR2(C)
      • Refutation
        • Q(a);P_SPINQ(a)
    • Try
      • R(D);CHECK
      • Vars
        • K(c);P-FLIGHT,P_SPINP(e),XB(B)::QAR2(C)
      • Refutation
        • Q(a);P_SPINQ(a)
    • Try
      • R(D);CHECK,XR(f)
      • Vars
        • K(c);P-FLIGHT,P_SPINP(e),XB(B)::QAR2(C)
      • Refutation
        • Q(a);P_SPINQ(a)
  • Actual
    • B(B);
    • Threat
      • QAR1(C)
    • Vars
      • K(c);S_FLIGHT::QAR1(C)
      • K(c);P-FLIGHT,P_SPINS(b),XB(B)::QAR2(C)
      • Q(a);N_GUARD,XR(A)::B(E)+R(D)
      • R(f);N_GUARD::B(E)+R(D)
      • S(b);::B(E)+R(D),DCHECK
      • P(e);OGATE,SBLOCK::QAB1(C)
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).