MESON Chess Problem Database

Problem Display
PID: 276726 (4R3/3K4/1N6/pp3pp1/Nn1k4/8/3r4/5Q2 w - - 0 1)

Garaj, Ivan

Sarkits, Anatoly L

Comm., Pat a Mat, 2006

4R3/3K4/1N6/pp3pp1/Nn1k4/8/3r4/5Q2

#2

5 + 7

15601 Albrecht-Leiss-Degener Collection 2024

SOLUTION

  • SOUND
  • Sets
    • 1...bxa4
      • 2.Qc4#
  • Tries
    • 1.Qe2?
      • threat
        • 2.Qe3#
      • 1...Rd3
        • 2.Qe5#
      • 1...Sc2
        • 2.Qxd2#
      • 1...Sd5
        • 2.Qxd2#
      • 1...f4
        • 2.Re4#
        • 2.Qe4#
      • 1...Rxe2!
    • 1.Qh3?
      • threat
        • 2.Qc3#
        • 2.Qe3#
      • 1...bxa4
        • 2.Qe3#
      • 1...Rc2
        • 2.Qe3#
      • 1...Re2
        • 2.Qc3#
      • 1...Rd3
        • 2.Qh8#
      • 1...Sa2
        • 2.Qe3#
      • 1...Sc2
        • 2.Qc3#
      • 1...Sd3
        • 2.Qe3#
      • 1...f4
        • 2.Qc3#
      • 1...Sd5!
    • 1.Qa1+?
      • 1...Kd3
        • 2.Qc3#
      • 1...Rb2!
    • 1.Qe1?
      • threat
        • 2.Qe3#
      • 1...Re2
        • 2.Qc3#
      • 1...Rd3
        • 2.Qe5#
      • 1...Sc2
        • 2.Qxd2#
      • 1...Sd5
        • 2.Qxd2#
      • 1...f4
        • 2.Qe4#
      • 1...Kd3!
    • 1.Qf3?
      • threat
        • 2.Qc3#
        • 2.Qe3#
      • 1...bxa4
        • 2.Qe3#
      • 1...Rc2
        • 2.Qe3#
      • 1...Re2
        • 2.Qc3#
      • 1...Sa2
        • 2.Qd5#
        • 2.Qe3#
      • 1...Sc2
        • 2.Qd5#
        • 2.Qc3#
      • 1...Sd3
        • 2.Qd5#
        • 2.Qe3#
      • 1...Sd5
        • 2.Qxd5#
      • 1...f4
        • 2.Re4#
        • 2.Qe4#
        • 2.Qc3#
      • 1...Rd3!
  • Keys
    • 1.Qc1!
      • threat
        • 2.Qc3#
      • 1...Kd3
        • 2.Qc3#
      • 1...bxa4
        • 2.Qc4#
      • 1...Rc2
        • 2.Qe3#
      • 1...Rd3
        • 2.Qc5#
      • 1...Sa2
        • 2.Qxd2#
      • 1...Sc2
        • 2.Qxd2#
      • 1...Sd5
        • 2.Qxd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • P(e);N_GUARD,XS(B)::QAR1(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • R(a);SBLOCK::QAB1(A)
        • S(b);N_GUARD::QAR2(A),XR(a)
      • Refutation
        • R(a);XQ(A)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(e);XS(B)::QAB1(A)
        • R(a);::QAB1(A)
        • R(a);SBLOCK::QAB(A)
        • S(b);::QAB1(A)
        • P(f);::QAB1(A)
      • Refutation
        • S(b);
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(A)
      • Refutation
        • R(a);P_SPINR(a)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • R(a);OGATE::QAB1(A)
        • R(a);SBLOCK::QAB1(A)
        • S(b);N_GUARD::QAR2(A),XR(a)
        • P(f);N_GUARD::QAR1(A)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(e);XS(B)::QAB1(A)
        • R(a);::QAB1(A)
        • S(b);N_GUARD::QAR1(A),XS(b)
      • Refutation
        • R(a);
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • K(c);P-FLIGHT::QAR1(A)
      • P(e);N_GUARD,XS(B)::QAR1(A)
      • R(a);OGATE::QAB1(A)
      • R(a);SBLOCK::QAB1(A)
      • S(b);N_GUARD::QAR2(A),XR(a)
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).