MESON Chess Problem Database

Problem Display
PID: 68935 (n2R3K/5Qp1/5p2/P6p/p7/n1k3r1/1RP4q/r1B2BN1 w - - 0 1)

Dobrescu, Emilian

1st Place, Match: Belgrade - Bucharest, 1957-1958

n2R3K/5Qp1/5p2/P6p/p7/n1k3r1/1RP4q/r1B2BN1

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qh1
      • 2.Se2#
    • 1...Qe2
      • 2.Sxe2#
    • 1...Qh3
      • 2.Se2#
    • 1...Qh4
      • 2.Se2#
    • 1...Rxg1
      • 2.Rd3#
    • 1...Rg2
      • 2.Rd3#
    • 1...Rd3
      • 2.Rxd3#
    • 1...Rg4
      • 2.Rd3#
    • 1...Rg5
      • 2.Rd3#
    • 1...Rg6
      • 2.Rd3#
    • 1...Sb1
      • 2.Qc4#
    • 1...Sxc2
      • 2.Qc4#
    • 1...Sc4
      • 2.Qxc4#
    • 1...Sb5
      • 2.Qc4#
    • 1...g5
      • 2.Qxf6#
    • 1...g6
      • 2.Qxf6#
  • Tries
    • 1.Rb3+?
      • 1...axb3
        • 2.Qxb3#
      • 1...Kxc2!
    • 1.Qd5?
      • threat
        • 2.Qd4#
      • 1...Qxg1
        • 2.Qd2#
      • 1...Sxc2
        • 2.Qc4#
        • 2.Qc6#
        • 2.Qc5#
      • 1...Qd2
        • 2.Qxd2#
      • 1...Qh4
        • 2.Se2#
        • 2.Qd2#
      • 1...Rd3
        • 2.Qxd3#
      • 1...Rg4
        • 2.Qf3#
        • 2.Qd3#
      • 1...Sb5
        • 2.Qc4#
        • 2.Qc6#
        • 2.Qc5#
      • 1...Qf2!
    • 1.Qb7?
      • threat
        • 2.Qb4#
      • 1...Sxc2
        • 2.Qc6#
      • 1...Qh4
        • 2.Bd2#
      • 1...Rg4
        • 2.Qf3#
      • 1...Sb5
        • 2.Qc6#
      • 1...Sb6!
    • 1.Qc7+?
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sxc7!
    • 1.Qd7?
      • threat
        • 2.Qd4#
      • 1...Qxg1
        • 2.Qd2#
      • 1...Sxc2
        • 2.Qc6#
      • 1...Rd3
        • 2.Qxd3#
      • 1...Qd2
        • 2.Qxd2#
      • 1...Qh4
        • 2.Qd2#
      • 1...Rg4
        • 2.Qd3#
      • 1...Sb5
        • 2.Qc6#
      • 1...Qf2!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Qb4#
      • 1...Sxc2
        • 2.Qc5#
      • 1...Qh4
        • 2.Qe1#
      • 1...Rg4
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 13
  • Sets
    • Q(b);N_GUARD::S(C)
    • Q(b);N_GUARD::S(C),XQ(b)
    • R(e);N_GUARD,XS(C)::R1(H)
    • R(e);N_GUARD::R1(H)
    • R(e);N_GUARD::R1(H),XR(e)
    • S(c);N_GUARD::QAR1(G)
    • S(c);N_GUARD,XP(E)::QAR1(G)
    • S(c);N_GUARD::QAR1(G),XS(c)
    • P(i);N_GUARD::QAB(G),XP(h)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • P(f);OGATE,XR(D)::QAR1(G),XP(f)
      • Refutation
        • K(d);P-FLIGHT,XP(E)
    • Try
      • Q(G);
      • Threat
        • QAB1(G)
      • Vars
        • Q(b);N_GUARD,XS(C)::QAB1(G)
        • Q(b);N_GUARD::QAB1(G),XQ(b)
        • R(e);N_GUARD::QAR1(G),XR(e)
      • Refutation
        • Q(b);
    • Try
      • Q(G);
      • Threat
        • QAB1(G)
      • Vars
        • S(c);N_GUARD,XP(E)::QAR(G)
        • Q(b);N_GUARD::B(A)
        • R(e);N_GUARD::QAR(G)
        • S(c);N_GUARD::QAR(G)
      • Refutation
        • S(j);
    • Try
      • Q(G);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAR1(G),XS(c)
      • Refutation
        • S(j);XQ(G)
    • Try
      • Q(G);
      • Threat
        • QAB1(G)
      • Vars
        • Q(b);N_GUARD,XS(C)::QAB1(G)
        • S(c);N_GUARD,XP(E)::QAR(G)
        • R(e);N_GUARD::QAR1(G),XR(e)
        • Q(b);N_GUARD::QAB1(G),XQ(b)
        • Q(b);N_GUARD::QAB1(G)
        • R(e);N_GUARD::QAR1(G)
        • S(c);N_GUARD::QAR(G)
      • Refutation
        • Q(b);
  • Actual
    • Q(G);
    • Threat
      • QAB1(G)
    • Vars
      • S(c);N_GUARD,XP(E)::QAR2(G)
      • Q(b);N_GUARD::QAB(G)
      • R(e);N_GUARD::QAR2(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).