MESON Chess Problem Database

Problem Display
PID: 250849 (b1B1Q2b/4p2r/3P1p2/5P2/1p2k1P1/n1P1p3/2n1K1PB/3R1R2 w - - 0 1)

Beal, Edward W

The Problemist, 1991

b1B1Q2b/4p2r/3P1p2/5P2/1p2k1P1/n1P1p3/2n1K1PB/3R1R2

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rxh2
      • 2.Qxe7#
    • 1...Rh3
      • 2.Qxe7#
    • 1...Rh4
      • 2.Qxe7#
    • 1...Rh5
      • 2.Qxe7#
    • 1...Rh6
      • 2.Qxe7#
    • 1...Bc6
      • 2.Qxc6#
    • 1...Bb7
      • 2.Bxb7#
    • 1...Bg7
      • 2.Qxe7#
    • 1...Sa1
      • 2.Rd4#
    • 1...Se1
      • 2.Rd4#
    • 1...Sd4+
      • 2.Rxd4#
    • 1...e5
      • 2.Rf4#
    • 1...e6
      • 2.Qxe6#
  • Keys
    • 1.Ba6!
      • threat
        • 2.Qxa8#
      • 1...Sd4+
        • 2.Rxd4#
      • 1...Rxh2
        • 2.Qxe7#
      • 1...Bd5
        • 2.Bd3#
      • 1...Bc6
        • 2.Qxc6#
      • 1...Bb7
        • 2.Bxb7#
      • 1...e5
        • 2.Rf4#
      • 1...e6
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • R(h);N_GUARD,P_PINP(D),XB(E)::QAR(K),XP(g)
    • R(h);N_GUARD::QAR(K),XP(g)
    • B(i);N_GUARD::QAB(K),XB(i)
    • B(i);N_GUARD::B(J),XB(i)
    • B(j);S_CUTR(h)::QAR(K),XP(g)
    • S(a);N_GUARD::R1(A)
    • S(a);CHECK,N_GUARD::R1(A),XS(a)
    • P(g);::R1(B)
    • P(g);OGATE::QAR2(K),XP(g)
  • Actual
    • B(J);
    • Threat
      • QAB(K),XB(i)
    • Vars
      • S(a);CHECK,N_GUARD::R1(A),XS(a)
      • R(h);N_GUARD,P_PINP(D),XB(E)::QAR(K),XP(g)
      • B(i);SBLOCK::B(J)
      • B(i);N_GUARD::QAB(K),XB(i)
      • B(i);N_GUARD::B(J),XB(i)
      • P(g);::R1(B)
      • P(g);OGATE::QAR2(K),XP(g)
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).