MESON Chess Problem Database

Problem Display
PID: 258677 (6bQ/4p2B/8/KNkP3R/5P2/pP1pq3/Pp1rpN2/1n2B3 w - - 0 1)

Pringle, TA

English Mechanic and World of Science, 1905

(First published on Fri Feb 10 1905)

6bQ/4p2B/8/KNkP3R/5P2/pP1pq3/Pp1rpN2/1n2B3

#2

11 + 10

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf2
      • 2.Bxf2#
    • 1...Qd4
      • 2.Qxd4#
    • 1...Qf3
      • 2.Qd4#
    • 1...Qg3
      • 2.Se4#
      • 2.Qd4#
    • 1...Qh3
      • 2.Se4#
      • 2.Qd4#
    • 1...Qe4
      • 2.Sxe4#
    • 1...Qe6
      • 2.Qd4#
    • 1...Rd1
      • 2.Bb4#
    • 1...Rc2
      • 2.Bb4#
    • 1...Bxd5
      • 2.Qc8#
    • 1...Bf7
      • 2.Qc8#
    • 1...Bxh7
      • 2.Qc8#
    • 1...Sc3
      • 2.Qxc3#
  • Tries
    • 1.Sxd3+?
      • 1...Rxd3
        • 2.Bb4#
      • 1...Qxd3!
    • 1.Qf6?
      • threat
        • 2.Qb6#
        • 2.Qc6#
      • 1...Bxd5
        • 2.Qb6#
      • 1...Qe5
        • 2.Qc6#
      • 1...e5
        • 2.Qc6#
        • 2.Qd6#
      • 1...Qe6
        • 2.Qd4#
      • 1...Be6
        • 2.Qxe7#
      • 1...e6
        • 2.Qe7#
        • 2.Qf8#
      • 1...exf6!
  • Keys
    • 1.Be4!
      • 1...Qxf2
        • 2.Bxf2#
      • 1...Qxf4
        • 2.Qd4#
      • 1...Qxe4
        • 2.Sxe4#
      • 1...Bxd5
        • 2.Qc8#
      • 1...Qd4
        • 2.Qxd4#
      • 1...Qf3
        • 2.Qd4#
      • 1...Qg3
        • 2.Qd4#
      • 1...Qh3
        • 2.Qd4#
      • 1...Rd1
        • 2.Bb4#
      • 1...Rc2
        • 2.Bb4#
      • 1...Be6
        • 2.dxe6#
      • 1...Bf7
        • 2.Qc8#
      • 1...Bh7
        • 2.Qc8#
      • 1...Sc3
        • 2.Qxc3#
      • 1...e5
        • 2.dxe5 ep#
      • 1...e6
        • 2.dxe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • Q(g);OGATE,XS(C)::B(A),XQ(g)
    • Q(g);N_GUARD::QAB1(K),XQ(g)
    • Q(g);N_GUARD::QAB1(K)
    • Q(g);N_GUARD::S(C),XQ(g)
    • R(c);OGATE::B(A)
    • B(j);OGATE,P_SPINB(j),XP(H)::QAR(K)
    • B(j);OGATE::QAR(K)
    • B(j);OGATE,XB(J)::QAR(K)
    • S(a);N_GUARD::QAR2(K),XS(a)
  • Tries
    • Try
      • S(C);CHECK,XP(f)
      • Vars
        • R(c);OGATE,XS(C)::B(A)
      • Refutation
        • Q(g);XS(C)
    • Try
      • Q(K);
      • Threat
        • DUALS(2)
      • Vars
        • B(j);P_SPINB(j),XP(H)::QAB1(K)
        • Q(g);::QAR1(K)
        • Q(g);N_GUARD::QAB1(K)
        • B(j);S_CUTQ(g)::QAB(K),XP(i)
      • Refutation
        • P(i);XQ(K)
  • Actual
    • B(J);
    • Vars
      • Q(g);OGATE,XS(C)::B(A),XQ(g)
      • Q(g);N_GUARD,XP(E)::QAB1(K)
      • Q(g);XB(J)::S(C),XQ(g)
      • B(j);OGATE,P_SPINB(j),XP(H)::QAR(K)
      • Q(g);N_GUARD::QAB1(K),XQ(g)
      • Q(g);N_GUARD::QAB1(K)
      • R(c);OGATE::B(A)
      • B(j);OGATE::R(I)+P(H),XB(j)
      • B(j);OGATE::QAR(K)
      • S(a);N_GUARD::QAR2(K),XS(a)
      • P(i);OGATE::R(I)+P(H),XP(i),EP
      • P(i);OGATE::R(I)+P(H),XP(i)
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).