MESON Chess Problem Database

Problem Display
PID: 69848 (B1q1b3/B2P4/1n1N1p1K/r1N2p2/2rn4/2PPkpQ1/2Pp2R1/6b1 w - - 0 1)

Burger, Robert Eugene

2nd Place, Match: USA - Yugoslavia, 1954

B1q1b3/B2P4/1n1N1p1K/r1N2p2/2rn4/2PPkpQ1/2Pp2R1/6b1

#2

11 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Sxc2
      • 2.Sxf5#
      • 2.Qxf3#
    • 1...Se2
      • 2.Sxf5#
      • 2.Qxf3#
    • 1...Sb3
      • 2.Sxf5#
      • 2.Qxf3#
    • 1...Sb5
      • 2.Sxf5#
      • 2.Qxf3#
    • 1...Sc6
      • 2.Sxf5#
    • 1...Se6
      • 2.Sxf5#
      • 2.Qxf3#
    • 1...Sa4
      • 2.Sxc4#
    • 1...Sd5
      • 2.Sxc4#
    • 1...Sxd7
      • 2.Sxc4#
    • 1...Sxa8
      • 2.Sxc4#
  • Tries
    • 1.Re2+?
      • 1...Sxe2
        • 2.Sxf5#
        • 2.Qxf3#
      • 1...Kxe2!
  • Keys
    • 1.Se6!
      • threat
        • 2.Qf4#
      • 1...Sxc2
        • 2.Qxf3#
      • 1...Sxe6
        • 2.Qxf3#
      • 1...Bf2
        • 2.Qxf2#
      • 1...Bh2
        • 2.Qf2#
      • 1...Se2
        • 2.Qxf3#
      • 1...Sb3
        • 2.Qxf3#
      • 1...Sb5
        • 2.Sxf5#
        • 2.Qxf3#
      • 1...Sc6
        • 2.Sxc4#
      • 1...Sd5
        • 2.Sxf5#
      • 1...f4
        • 2.Qxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 7
    • REMOVED MATES = 3
  • Sets
    • S(f);N_GUARD::S(G),XP(h)
    • S(i);N_GUARD::S(G),XR(e)
    • S(i);N_GUARD,XP(J)::S(G),XR(e)
    • S(i);N_GUARD,XB(K)::S(G),XR(e)
  • Tries
    • Try
      • R(B);CHECK
      • Refutation
        • K(c);N_SPINP(d),P-FLIGHT,XR(B)
  • Actual
    • S(F);
    • Threat
      • QAB1(E)
    • Vars
      • S(f);N_GUARD,P_SPINS(i),XP(A)::QAR1(E),XP(d)
      • S(f);N_GUARD,P_SPINS(i),XS(F)::QAR1(E),XP(d)
      • B(a);N_GUARD::QAB1(E),XB(a)
      • B(a);N_GUARD::QAB1(E)
      • S(f);N_GUARD,P_SPINS(i)::QAR1(E),XP(d)
      • S(f);P_SPINS(i),S_CUTQ(k)::S(G),XR(e)
      • S(i);P_SPINS(f),S_CUTR(g)::S(G),XP(h)
      • P(h);::QAB1(E),XP(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).