MESON Chess Problem Database

Problem Display
PID: 53173 (1B3R1n/5bpq/7p/2N2k1N/2Q3r1/1K5B/8/4b3 w - - 0 1)

Reddmann, Hauke

1st Comm., Die Schwalbe, 2002

1B3R1n/5bpq/7p/2N2k1N/2Q3r1/1K5B/8/4b3

#2

7 + 8

23 Die Schwalbe 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Qg6
      • 2.Qd5#
    • 1...g5
      • 2.Qe6#
    • 1...g6
      • 2.Qd5#
  • Tries
    • 1.Kb2?
      • threat
        • 2.Qxg4#
      • 1...Kg5
        • 2.Qxg4#
      • 1...Kg6
        • 2.Qxg4#
      • 1...Qg6
        • 2.Qd5#
        • 2.Qf4#
      • 1...g5
        • 2.Qd3#
        • 2.Qe6#
        • 2.Qc2#
        • 2.Qe4#
      • 1...Bc3+!
    • 1.Kc2?
      • threat
        • 2.Qxg4#
      • 1...Kg6
        • 2.Qxg4#
      • 1...Qg6
        • 2.Qd5#
        • 2.Qf4#
      • 1...g5
        • 2.Qd3#
        • 2.Qe6#
        • 2.Qe4#
      • 1...Kg5+!
    • 1.Ka3?
      • threat
        • 2.Qxg4#
      • 1...Kg5
        • 2.Qxg4#
      • 1...Kg6
        • 2.Qxg4#
      • 1...Qg6
        • 2.Qd5#
        • 2.Qf4#
      • 1...g5
        • 2.Qd3#
        • 2.Qe6#
        • 2.Qc2#
        • 2.Qe4#
      • 1...Bb4+!
    • 1.Se6?
      • threat
        • 2.Qxg4#
      • 1...Kg6
        • 2.Qxg4#
      • 1...Qg6
        • 2.Qd5#
      • 1...g5!
    • 1.Bf4?
      • threat
        • 2.Qe6#
      • 1...Qg6
        • 2.Qd5#
      • 1...Kg6!
    • 1.Rxf7+?
      • 1...Kg5
        • 2.Qxg4#
      • 1...Sxf7
        • 2.Qxg4#
      • 1...Kg6!
  • Keys
    • 1.Ka4!
      • threat
        • 2.Qxg4#
      • 1...Kg5
        • 2.Qxg4#
      • 1...Kg6
        • 2.Qxg4#
      • 1...Qg6
        • 2.Qf4#
      • 1...g5
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(g);SBLOCK::QAR2(C)
    • P(f);SBLOCK::QAB1(C)
    • P(f);SBLOCK::QAR2(C)
  • Tries
    • Try
      • K(A);N_SPINQ(C),P-FLIGHT
      • Threat
        • QAB1(C),XR(b)
      • Vars
        • K(c);N_SPINB(e),N_SPINR(b),P-FLIGHT::QAR1(C),XR(b)
        • K(c);N_SPINB(e),N_SPINR(b),S_FLIGHT::QAR2(C),XR(b)
      • Refutation
        • B(a);CHECK
    • Try
      • K(A);N_SPINQ(C),S_FLIGHT
      • Threat
        • QAB1(C),XR(b)
      • Vars
        • K(c);N_SPINB(e),N_SPINR(b),S_FLIGHT::QAR2(C),XR(b)
      • Refutation
        • K(c);CHECK,N_SPINB(e),N_SPINR(b),P-FLIGHT
    • Try
      • K(A);N_SPINQ(C),P-FLIGHT
      • Threat
        • QAB1(C),XR(b)
      • Vars
        • K(c);N_SPINB(e),N_SPINR(b),P-FLIGHT::QAR1(C),XR(b)
        • K(c);N_SPINB(e),N_SPINR(b),S_FLIGHT::QAR2(C),XR(b)
      • Refutation
        • B(a);CHECK
    • Try
      • S(D);N_SPINQ(C)
      • Threat
        • QAB1(C),XR(b)
      • Vars
        • K(c);N_SPINB(e),N_SPINR(b),S_FLIGHT::QAR2(C),XR(b)
        • Q(g);SBLOCK::QAR2(C)
      • Refutation
        • P(f);
    • Try
      • B(F);
      • Threat
        • QAB1(C)
      • Vars
        • Q(g);SBLOCK::QAR2(C)
      • Refutation
        • K(c);N_SPINB(e),N_SPINR(b),S_FLIGHT
    • Try
      • R(G);CHECK,N_SPINQ(C),XB(e)
      • Vars
        • K(c);N_SPINR(b),P-FLIGHT::QAR1(C),XR(b)
        • S(h);XR(G)::QAB1(C),XR(b)
      • Refutation
        • K(c);N_SPINR(b),S_FLIGHT
  • Actual
    • K(A);S_FLIGHT
    • Threat
      • QAB1(C),XR(b)
    • Vars
      • K(c);N_SPINB(e),N_SPINR(b),P-FLIGHT::QAR1(C),XR(b)
      • K(c);N_SPINB(e),N_SPINR(b),S_FLIGHT::QAR2(C),XR(b)
      • Q(g);SBLOCK::QAR1(C)
      • P(f);SBLOCK::QAB1(C)
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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).