MESON Chess Problem Database

Problem Display
PID: 6490 (5K2/7p/3N2kr/4pR1p/8/2p2Q2/1pq1n3/1Bb5 w - - 0 1)

Mansfield, Comins

Wembley Enterprise, 1929

5K2/7p/3N2kr/4pR1p/8/2p2Q2/1pq1n3/1Bb5

#2

5 + 10

3202 Complete Mansfield/I 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf5+
      • 2.Qxf5#
    • 1...Sf4
      • 2.Qg3#
  • Tries
    • 1.Se4?
      • threat
        • 2.Rf6#
      • 1...Bg5
        • 2.Rxg5#
      • 1...Qxe4!
    • 1.Sc8?
      • threat
        • 2.Se7#
      • 1...Qxf5+
        • 2.Qxf5#
      • 1...Bg5!
    • 1.Ba2?
      • threat
        • 2.Bf7#
      • 1...Qxf5+
        • 2.Qxf5#
      • 1...Qb3!
    • 1.Rg5+?
      • 1...Bxg5
        • 2.Qf7#
      • 1...Kxg5!
    • 1.Qg2+?
      • 1...Bg5
        • 2.Qxg5#
      • 1...Sg3!
    • 1.Qg4+?
      • 1...Bg5
        • 2.Qxg5#
      • 1...hxg4!
    • 1.Qb7?
      • threat
        • 2.Qf7#
        • 2.Qg7#
      • 1...Qb3
        • 2.Qg7#
      • 1...Qxf5+!
    • 1.Qg3+?
      • 1...Bg5
        • 2.Qxg5#
      • 1...Sxg3!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Qe8#
      • 1...Qxf5+
        • 2.Sf7#
      • 1...Qb3
        • 2.Sc4#
      • 1...Qa4
        • 2.Sb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(c);CHECK,OGATE,P_SPINQ(c),XR(C)::QAB1(B),XQ(c)
    • S(d);N_GUARD,S_CUTB(a)::QAR(B)
  • Tries
    • Try
      • S(D);
      • Threat
        • R1(C)
      • Vars
        • B(a);N_GUARD::R1(C),XB(a)
      • Refutation
        • Q(c);XS(D)
    • Try
      • S(D);
      • Threat
        • S(D)
      • Vars
        • Q(c);CHECK,OGATE,P_SPINQ(c),XR(C)::QAB1(B),XQ(c)
      • Refutation
        • B(a);
    • Try
      • B(A);
      • Threat
        • B(A)
      • Vars
        • Q(c);CHECK,OGATE,XR(C)::QAB1(B),XQ(c)
      • Refutation
        • Q(c);
    • Try
      • R(C);CHECK,P_PINQ(c)
      • Vars
        • B(a);SBLOCK,XR(C)::QAB1(B)
      • Refutation
        • K(h);N_SPINQ(c),P-FLIGHT,XR(C)
    • Try
      • Q(B);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAR1(B),XB(a)
      • Refutation
        • S(d);P_SPINS(d)
    • Try
      • Q(B);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAR1(B),XB(a)
      • Refutation
        • P(g);XQ(B)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);::QAR1(B)
      • Refutation
        • Q(c);CHECK,P_SPINQ(c),XR(C)
    • Try
      • Q(B);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAR1(B),XB(a)
      • Refutation
        • S(d);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • QAB(B)
    • Vars
      • Q(c);CHECK,P_SPINQ(c),XR(C)::QAR(B)+S(D)
      • Q(c);::QAR(B)+S(D)
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).