MESON Chess Problem Database

Problem Display
PID: 198373 (7b/2P1B3/K2prp2/3R1bN1/1p6/2N1k1P1/2R1Pp2/Qn1n3q w - - 0 1)

Marshall, Burney Means

Brisbane Courier, 1920

7b/2P1B3/K2prp2/3R1bN1/1p6/2N1k1P1/2R1Pp2/Qn1n3q

#2

10 + 11

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qg2
      • 2.Sxd1#
    • 1...Qf3
      • 2.Sxd1#
    • 1...Qe4
      • 2.Sxd1#
    • 1...Qxd5
      • 2.Sxd5#
    • 1...Qh2
      • 2.Sxd1#
    • 1...Qh3
      • 2.Sxd1#
    • 1...Qh4
      • 2.Sxd1#
    • 1...Qh5
      • 2.Sxd1#
    • 1...Qh6
      • 2.Sxd1#
    • 1...Qh7
      • 2.Sxd1#
    • 1...Re4
      • 2.Rd3#
    • 1...Bd3+
      • 2.Rxd3#
    • 1...Bh3
      • 2.Rd3#
    • 1...Bg4
      • 2.Rd3#
    • 1...Sa3
      • 2.Qc1#
    • 1...Sbxc3
      • 2.Qc1#
    • 1...f1S
      • 2.Sxd1#
    • 1...f1B
      • 2.Sxd1#
    • 1...fxg5
      • 2.Bxg5#
  • Tries
    • 1.Qa5?
      • threat
        • 2.Qb6#
      • 1...Bd3+
        • 2.Rxd3#
      • 1...fxg5
        • 2.Bxg5#
      • 1...Qe4
        • 2.Sxd1#
      • 1...Qh4
        • 2.Sxd1#
      • 1...Re4
        • 2.Rd3#
      • 1...Qxd5!
  • Keys
    • 1.Kb7!
      • threat
        • 2.Qa7#
      • 1...Qxd5+
        • 2.Sxd5#
      • 1...fxg5
        • 2.Bxg5#
      • 1...Qe4
        • 2.Sxd1#
      • 1...Qh4
        • 2.Sxd1#
      • 1...Re4
        • 2.Rd3#
      • 1...Sa3
        • 2.Qc1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 13
  • Sets
    • Q(c);N_GUARD::S(D),XS(b)
    • Q(c);XR(F)::S(D),XQ(c)
    • R(i);S_CUTB(g)::R1(F)
    • B(g);CHECK,N_GUARD::R1(F),XB(g)
    • B(g);N_GUARD::R1(F)
    • S(a);OGATE::QAB(A)
    • S(a);OGATE,XS(D)::QAB(A)
    • P(d);S_CUTQ(c)::S(D),XS(b)
    • P(d);P_PINP(C),S_CUTQ(c)::S(D),XS(b)
    • P(j);OGATE,XS(G)::B(J),XP(j)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Vars
        • B(g);CHECK,N_GUARD::R1(F),XB(g)
        • P(j);OGATE,XS(G)::B(J),XP(j)
        • Q(c);N_GUARD::S(D),XS(b)
        • R(i);S_CUTB(g)::R1(F)
      • Refutation
        • Q(c);XR(F)
  • Actual
    • K(H);P_SPINR(F),S_FLIGHT
    • Threat
      • QAB(A)
    • Vars
      • Q(c);CHECK,XR(F)::S(D),XQ(c)
      • P(j);OGATE,XS(G)::B(J),XP(j)
      • Q(c);N_GUARD::S(D),XS(b)
      • Q(c);N_GUARD,N_PINR(F)::S(D),XS(b)
      • R(i);N_PINR(F)::R1(F)
      • S(a);OGATE::QAB(A)
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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).