MESON Chess Problem Database

Problem Display
PID: 101481 (3b4/1p1Q1p2/8/pPRKRPp1/8/1P1k1P2/2NrN3/1n1q1n2 w - - 0 1)

Berd, Benjamin M

Good Companions (January), 1917

3b4/1p1Q1p2/8/pPRKRPp1/8/1P1k1P2/2NrN3/1n1q1n2

#2

10 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qc1
      • 2.Sxc1#
    • 1...Qe1
      • 2.Sxe1#
    • 1...Sa3
      • 2.Rc3#
    • 1...Sc3+
      • 2.Rxc3#
    • 1...Sh2
      • 2.Re3#
    • 1...Se3+
      • 2.Rxe3#
    • 1...Sg3
      • 2.Re3#
    • 1...a4
      • 2.Sb4#
    • 1...g4
      • 2.Sf4#
    • 1...b6
      • 2.Kc6#
    • 1...f6
      • 2.Ke6#
  • Keys
    • 1.Kd6!
      • 1...Bc7+
        • 2.Kxc7#
      • 1...Be7+
        • 2.Kxe7#
      • 1...Qxc2
        • 2.Rcd5#
      • 1...Qxe2
        • 2.Red5#
      • 1...Rxc2
        • 2.Rcd5#
      • 1...Rxe2
        • 2.Red5#
      • 1...Sc3
        • 2.Rxc3#
      • 1...Se3
        • 2.Rxe3#
      • 1...Qc1
        • 2.Sxc1#
      • 1...Qe1
        • 2.Sxe1#
      • 1...Bb6
        • 2.Ke7#
      • 1...Bf6
        • 2.Kc7#
      • 1...Sa3
        • 2.Rc3#
      • 1...Sh2
        • 2.Re3#
      • 1...Sg3
        • 2.Re3#
      • 1...a4
        • 2.Sb4#
      • 1...g4
        • 2.Sf4#
      • 1...b6
        • 2.Kc6#
      • 1...f6
        • 2.Ke6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • Q(b);N_GUARD::S(B),XQ(b)
    • Q(b);N_GUARD::S(A),XQ(b)
    • S(a);N_GUARD::R1(F)
    • S(a);CHECK,N_GUARD::R1(F),XS(a)
    • S(c);N_GUARD::R1(H)
    • S(c);CHECK,N_GUARD::R1(H),XS(c)
    • P(f);N_GUARD::S(A)
    • P(g);N_GUARD::S(B)
    • P(h);::QAR(J)+K(G)
    • P(i);::QAR(J)+K(G)
  • Actual
    • K(G);P-FLIGHT
    • Vars
      • B(j);CHECK::QAR(J)+K(G),XB(j)
      • Q(b);SBLOCK,XS(A)::R(F)
      • Q(b);SBLOCK,XS(B)::R(H)
      • R(d);SBLOCK,XS(A)::R(F)
      • R(d);SBLOCK,XS(B)::R(H)
      • S(a);N_GUARD::R1(F),XS(a)
      • S(c);N_GUARD::R1(H),XS(c)
      • Q(b);N_GUARD::S(B),XQ(b)
      • Q(b);N_GUARD::S(A),XQ(b)
      • B(j);::QAR(J)+K(G)
      • S(a);N_GUARD::R1(F)
      • S(c);N_GUARD::R1(H)
      • P(f);N_GUARD::S(A)
      • P(g);N_GUARD::S(B)
      • P(h);::QAR(J)+K(G)
      • P(i);::QAR(J)+K(G)
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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).