MESON Chess Problem Database

Problem Display
PID: 8216 (Q7/3pn3/1P4B1/1P4p1/p2kP3/3N2R1/Kn1B2Nr/2R5 w - - 0 1)

Burger, Robert Eugene

2nd Prize, US Problem Bulletin, 1995

Q7/3pn3/1P4B1/1P4p1/p2kP3/3N2R1/Kn1B2Nr/2R5

#2

11 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rxg2
      • 2.Qh8#
    • 1...Rh8
      • 2.Qxh8#
    • 1...Sd1
      • 2.Qxa4#
    • 1...Sc4
      • 2.Bc3#
    • 1...Sd5
      • 2.Qxd5#
    • 1...Sf5
      • 2.Qd5#
    • 1...Sxg6
      • 2.Qd5#
    • 1...Sc8
      • 2.Qd5#
    • 1...Sg8
      • 2.Qd5#
  • Tries
    • 1.Be1?
      • threat
        • 2.Bf2#
      • 1...Rxg2
        • 2.Qh8#
      • 1...Sd1
        • 2.Qxa4#
      • 1...Sc4
        • 2.Bc3#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Sf5
        • 2.Qd5#
      • 1...Sxd3!
    • 1.Rc5?
      • threat
        • 2.Bc3#
      • 1...Sxd3
        • 2.Be3#
      • 1...Sd1
        • 2.Qxa4#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Sc4!
    • 1.Qxa4+?
      • 1...Sc4
        • 2.Bc3#
        • 2.Rxc4#
        • 2.Qxc4#
      • 1...Sxa4!
  • Keys
    • 1.Sge1!
      • threat
        • 2.Be3#
      • 1...Rxd2
        • 2.Qh8#
      • 1...Sxd3
        • 2.Sf3#
      • 1...Re2
        • 2.Qh8#
      • 1...Sd1
        • 2.Qxa4#
      • 1...Sc4
        • 2.Sc2#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Sf5
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(b);N_GUARD,XS(D)::QAB(K)
    • R(b);N_GUARD::QAB(K),XR(b)
    • S(a);N_GUARD::QAR(K),XP(c)
    • S(a);SBLOCK::B(C)
    • S(g);N_GUARD::QAR1(K),XS(g)
    • S(g);N_GUARD::QAR1(K)
    • S(g);N_GUARD,XB(J)::QAR1(K)
  • Tries
    • Try
      • B(C);
      • Threat
        • B(C)
      • Vars
        • R(b);N_GUARD,XS(D)::QAB(K)
        • S(a);N_GUARD,P_PINS(D)::QAR(K),XP(c)
        • S(a);P_PINS(D),SBLOCK::B(C)
        • S(g);N_GUARD::QAR1(K),XS(g)
        • S(g);N_GUARD::QAR1(K)
      • Refutation
        • S(a);P_PINS(D),XS(E)
    • Try
      • R(A);
      • Threat
        • B(C)
      • Vars
        • S(a);SBLOCK,XS(E)::B(C)
        • S(a);N_GUARD::QAR(K),XP(c)
        • S(g);N_GUARD::QAR1(K),XS(g)
      • Refutation
        • S(a);
    • Try
      • Q(K);CHECK,XP(c)
      • Refutation
        • S(a);XQ(K)
  • Actual
    • S(D);
    • Threat
      • B(C)
    • Vars
      • R(b);N_GUARD,XB(C)::QAB(K)
      • S(a);P_PINB(C),SBLOCK,XS(E)::S(D)
      • R(b);N_GUARD::QAB(K)
      • S(a);N_GUARD,P_PINB(C)::QAR(K),XP(c)
      • S(a);P_PINB(C),SBLOCK::S(D)
      • S(g);N_GUARD::QAR1(K),XS(g)
      • S(g);N_GUARD::QAR1(K)
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).