MESON Chess Problem Database

Problem Display
PID: 223050 (kq4R1/8/1PP5/1pp2p2/p3pP2/3PB3/3K2B1/3Q2R1 w - - 0 1)

Schett, Sophie

Brooklyn Chess Chronicle, 1886

kq4R1/8/1PP5/1pp2p2/p3pP2/3PB3/3K2B1/3Q2R1

#2

10 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qc8
      • 2.Rxc8#
    • 1...Qd8
      • 2.Rxd8#
    • 1...Qe8
      • 2.Rxe8#
    • 1...Qf8
      • 2.Rxf8#
    • 1...exd3
      • 2.c7#
    • 1...b4
      • 2.Qxa4#
    • 1...c4
      • 2.b7#
  • Tries
    • 1.Bh1?
      • 1...Qxg8
        • 2.Rxg8#
      • 1...exd3
        • 2.c7#
      • 1...Qc8
        • 2.Rxc8#
      • 1...Qd8
        • 2.Rxd8#
      • 1...Qe8
        • 2.Rxe8#
      • 1...Qf8
        • 2.Rxf8#
      • 1...b4
        • 2.Qxa4#
      • 1...c4
        • 2.b7#
      • 1...a3!
    • 1.Qa1?
      • 1...exd3
        • 2.c7#
      • 1...Qc8
        • 2.Rxc8#
      • 1...Qd8
        • 2.Rxd8#
      • 1...Qe8
        • 2.Rxe8#
      • 1...Qf8
        • 2.Rxf8#
      • 1...a3
        • 2.Qxa3#
      • 1...b4
        • 2.Qxa4#
      • 1...c4
        • 2.b7#
      • 1...Qxg8!
  • Keys
    • 1.Qb3!
      • 1...Qxg8
        • 2.Qxg8#
      • 1...axb3
        • 2.Ra1#
      • 1...exd3
        • 2.c7#
      • 1...Qc8
        • 2.Rxc8#
      • 1...Qd8
        • 2.Rxd8#
      • 1...Qe8
        • 2.Rxe8#
      • 1...Qf8
        • 2.Rxf8#
      • 1...a3
        • 2.Qxa3#
      • 1...b4
        • 2.Qxa4#
      • 1...c4
        • 2.b7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(g);OGATEB::R(J),XQ(g)
    • Q(g);OGATEB,P_PINP(E)::R(J),XQ(g)
    • P(b);XP(E)::B(D)+P(I)
    • P(c);N_GUARD::QAR(A),XP(a)
    • P(d);::P(H)
  • Tries
    • Try
      • B(D);
      • Vars
        • Q(g);N_SPINQ(g),OGATE,XR(J)::R(B),XQ(g)
        • P(b);XP(E)::B(D)+P(I)
        • Q(g);OGATEB::R(J),XQ(g)
        • Q(g);OGATEB,P_PINP(E)::R(J),XQ(g)
        • P(c);N_GUARD::QAR(A),XP(a)
        • P(d);::P(H)
      • Refutation
        • P(a);
    • Try
      • Q(A);P_PINP(a)
      • Vars
        • P(b);XP(E)::B(D)+P(I)
        • Q(g);OGATEB::R(J),XQ(g)
        • Q(g);OGATEB,P_PINP(E)::R(J),XQ(g)
        • P(a);OGATEB::QAR(A),XP(a)
        • P(c);N_GUARD::QAR(A),XP(a)
        • P(d);::P(H)
      • Refutation
        • Q(g);N_SPINQ(g),XR(J)
  • Actual
    • Q(A);
    • Vars
      • Q(g);N_SPINQ(g),OGATE,XR(J)::QAR(A),XQ(g)
      • P(a);OGATEB,XQ(A)::R(B)
      • P(b);XP(E)::B(D)+P(I)
      • Q(g);OGATEB::R(J),XQ(g)
      • Q(g);OGATEB,P_PINP(E)::R(J),XQ(g)
      • P(a);OGATEB::QAR(A),XP(a)
      • P(c);N_GUARD::QAR(A),XP(a)
      • P(d);::P(H)
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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).