MESON Chess Problem Database

Problem Display
PID: 265117 (2Q1R3/5B2/N2p1p2/K7/1N1k4/8/1n1q1P2/1n1R4 w - - 0 1)

Brogi, Giuseppe

To Mat, 1960

2Q1R3/5B2/N2p1p2/K7/1N1k4/8/1n1q1P2/1n1R4

#2

8 + 6

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qd3
      • 2.Sc2#
    • 1...Sxd1
      • 2.Qc4#
    • 1...Sd3
      • 2.Qc4#
    • 1...Sa4
      • 2.Qc4#
    • 1...Sc4+
      • 2.Qxc4#
    • 1...d5
      • 2.Qc5#
  • Tries
    • 1.Rxd2+?
      • 1...Sd3
        • 2.Sc2#
        • 2.Rxd3#
        • 2.Qc4#
      • 1...Sxd2!
    • 1.Qc2?
      • threat
        • 2.Re4#
      • 1...Sc4+
        • 2.Qxc4#
      • 1...Qd3
        • 2.Sc6#
      • 1...Sc3
        • 2.Sc6#
      • 1...Sd3
        • 2.Qc4#
      • 1...d5
        • 2.Qc5#
      • 1...f5!
    • 1.Qc6?
      • threat
        • 2.Re4#
      • 1...Sc4+
        • 2.Qxc4#
      • 1...Sc3
        • 2.Qb6#
      • 1...d5
        • 2.Qc5#
      • 1...f5!
  • Keys
    • 1.Re3!
      • threat
        • 2.Qg4#
      • 1...Sc4+
        • 2.Qxc4#
      • 1...Qxd1
        • 2.Sc6#
      • 1...Qd3
        • 2.Sc2#
      • 1...Sc3
        • 2.Sc2#
        • 2.Sc6#
        • 2.Qxc3#
      • 1...Sd3
        • 2.Qc4#
      • 1...f5
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • Q(c);N_PINS(C)::S(C)
    • S(b);N_GUARD,N_SPINQ(c),XR(A)::QAR1(G)
    • S(b);N_GUARD,N_SPINQ(c)::QAR1(G)
    • S(b);N_GUARD::QAR1(G)
    • S(b);CHECK,N_GUARD::QAR1(G),XS(b)
    • P(e);N_GUARD::QAB1(G)
  • Tries
    • Try
      • R(A);CHECK,N_SPINS(C),XQ(c)
      • Refutation
        • S(a);XR(A)
    • Try
      • Q(G);
      • Threat
        • R1(H)
      • Vars
        • S(b);CHECK,N_GUARD::QAR1(G),XS(b)
        • Q(c);N_PINS(C)::S(C)
        • S(a);N_PINS(C)::S(C)
        • S(b);N_GUARD,N_SPINQ(c)::QAR1(G)
        • P(e);N_GUARD::QAB1(G)
      • Refutation
        • P(f);
    • Try
      • Q(G);
      • Threat
        • R1(H)
      • Vars
        • S(b);CHECK,N_GUARD::QAR1(G),XS(b)
        • S(a);N_PINS(C),SBLOCK::QAB(G)
        • P(e);N_GUARD::QAB1(G)
      • Refutation
        • P(f);
  • Actual
    • R(H);
    • Threat
      • QAR(G)
    • Vars
      • S(b);CHECK,N_GUARD::QAR1(G),XS(b)
      • Q(c);N_PINS(C),N_SPINQ(c),XR(A)::S(C)
      • Q(c);N_PINS(C)::S(C)
      • S(b);N_GUARD,N_SPINQ(c)::QAR1(G)
      • P(f);OGATEB::QAB(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).