MESON Chess Problem Database

Problem Display
PID: 287160 (B7/p4p1Q/k4P2/q1P5/2K5/1p6/RR6/8 w - - 0 1)

Subotic, Miroslav

Problem Paradise, 2018

B7/p4p1Q/k4P2/q1P5/2K5/1p6/RR6/8

#2

7 + 5

15601 Albrecht-Leiss-Degener Collection 2026

SOLUTION

  • SOUND
  • Sets
    • 1...Qa3
      • 2.Rxa3#
    • 1...Qa4+
      • 2.Rxa4#
    • 1...bxa2
      • 2.Bb7#
  • Tries
    • 1.Bh1?
      • 1...Qa4+
        • 2.Rxa4#
      • 1...bxa2
        • 2.Bb7#
      • 1...Qa3
        • 2.Rxa3#
      • 1...Qxa2!
    • 1.Bg2?
      • 1...Qa4+
        • 2.Rxa4#
      • 1...bxa2
        • 2.Bb7#
      • 1...Qa3
        • 2.Rxa3#
      • 1...Qxa2!
    • 1.Bf3?
      • 1...Qa4+
        • 2.Rxa4#
      • 1...bxa2
        • 2.Bb7#
      • 1...Qa3
        • 2.Rxa3#
      • 1...Qxa2!
    • 1.Be4?
      • 1...Qa4+
        • 2.Rxa4#
      • 1...bxa2
        • 2.Bb7#
      • 1...Qa3
        • 2.Rxa3#
      • 1...Qxa2!
    • 1.Bd5?
      • 1...Qa4+
        • 2.Rxa4#
      • 1...bxa2
        • 2.Bb7#
      • 1...Qa3
        • 2.Rxa3#
      • 1...Qxa2!
    • 1.Bc6?
      • 1...Qa4+
        • 2.Rxa4#
      • 1...bxa2
        • 2.Bb7#
      • 1...Qa3
        • 2.Rxa3#
      • 1...Qxa2!
    • 1.Ra3?
      • 1...Qa4+
        • 2.Rxa4#
      • 1...Qxa3!
    • 1.Rxb3?
      • threat
        • 2.Bb7#
      • 1...Qa4+
        • 2.Rxa4#
      • 1...Qa3
        • 2.Raxa3#
        • 2.Rbxa3#
      • 1...Qxa2!
    • 1.Qb1?
      • 1...Qa4+
        • 2.Rxa4#
      • 1...bxa2
        • 2.Bb7#
      • 1...Qa3
        • 2.Rxa3#
      • 1...Qxa2!
    • 1.Qc2?
      • 1...Qa4+
        • 2.Rxa4#
      • 1...bxa2
        • 2.Bb7#
      • 1...bxc2
        • 2.Bb7#
      • 1...Qa3
        • 2.Rxa3#
      • 1...Qxa2!
    • 1.Qe4?
      • threat
        • 2.Bb7#
        • 2.Qc6#
        • 2.Qb7#
      • 1...Qa4+
        • 2.Rxa4#
      • 1...bxa2
        • 2.Bb7#
        • 2.Qb7#
      • 1...Qa3
        • 2.Rxa3#
      • 1...Qxa2!
    • 1.Qf5?
      • threat
        • 2.Qc8#
      • 1...Qa4+
        • 2.Rxa4#
      • 1...Qa3
        • 2.Rxa3#
      • 1...Qxa2!
    • 1.Qg8?
      • threat
        • 2.Qc8#
      • 1...Qa4+
        • 2.Rxa4#
      • 1...Qa3
        • 2.Rxa3#
      • 1...Qxa2!
    • 1.Qh1?
      • threat
        • 2.Bb7#
        • 2.Qc6#
        • 2.Qb7#
      • 1...Qa4+
        • 2.Rxa4#
      • 1...bxa2
        • 2.Bb7#
        • 2.Qb7#
      • 1...Qa3
        • 2.Rxa3#
      • 1...Qxa2!
    • 1.Qh2?
      • threat
        • 2.Qd6#
      • 1...Qa4+
        • 2.Rxa4#
      • 1...bxa2
        • 2.Bb7#
      • 1...Qa3
        • 2.Rxa3#
      • 1...Qxa2!
    • 1.Qh3?
      • threat
        • 2.Qc8#
      • 1...Qa4+
        • 2.Rxa4#
      • 1...Qa3
        • 2.Rxa3#
      • 1...Qxa2!
    • 1.Qh4?
      • 1...Qa4+
        • 2.Rxa4#
      • 1...bxa2
        • 2.Bb7#
      • 1...Qa3
        • 2.Rxa3#
      • 1...Qxa2!
    • 1.Qh5?
      • 1...Qa4+
        • 2.Rxa4#
      • 1...bxa2
        • 2.Bb7#
      • 1...Qa3
        • 2.Rxa3#
      • 1...Qxa2!
    • 1.Qh6?
      • 1...Qa4+
        • 2.Rxa4#
      • 1...bxa2
        • 2.Bb7#
      • 1...Qa3
        • 2.Rxa3#
      • 1...Qxa2!
    • 1.Qxf7?
      • threat
        • 2.Bb7#
        • 2.Qe6#
        • 2.Qb7#
      • 1...Qa4+
        • 2.Rxa4#
      • 1...bxa2
        • 2.Bb7#
        • 2.Qb7#
      • 1...Qa3
        • 2.Rxa3#
      • 1...Qxa2!
    • 1.Qg7?
      • 1...Qa4+
        • 2.Rxa4#
      • 1...bxa2
        • 2.Bb7#
      • 1...Qa3
        • 2.Rxa3#
      • 1...Qxa2!
    • 1.Qh8?
      • threat
        • 2.Qc8#
      • 1...Qa4+
        • 2.Rxa4#
      • 1...Qa3
        • 2.Rxa3#
      • 1...Qxa2!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Kxb3#
        • 2.Kd4#
        • 2.Kd5#
        • 2.Qd6#
      • 1...Qa4+
        • 2.Rxa4#
      • 1...Qxa2
        • 2.Kb4#
      • 1...bxa2
        • 2.Bb7#
      • 1...Qa3
        • 2.Rxa3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(b);OGATEB::R(A),XQ(b)
    • Q(b);CHECK,OGATEB::R(A),XQ(b)
    • P(a);N_SPINQ(b),XR(A)::B(G)
  • Tries
    • Try
      • B(G);
      • Vars
        • Q(b);CHECK,OGATEB::R(A),XQ(b)
        • P(a);N_SPINQ(b),XR(A)::B(G)
        • Q(b);OGATEB::R(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XR(A)
    • Try
      • B(G);
      • Vars
        • Q(b);CHECK,OGATEB::R(A),XQ(b)
        • P(a);N_SPINQ(b),XR(A)::B(G)
        • Q(b);OGATEB::R(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XR(A)
    • Try
      • B(G);
      • Vars
        • Q(b);CHECK,OGATEB::R(A),XQ(b)
        • P(a);N_SPINQ(b),XR(A)::B(G)
        • Q(b);OGATEB::R(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XR(A)
    • Try
      • B(G);
      • Vars
        • Q(b);CHECK,OGATEB::R(A),XQ(b)
        • P(a);N_SPINQ(b),XR(A)::B(G)
        • Q(b);OGATEB::R(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XR(A)
    • Try
      • B(G);
      • Vars
        • Q(b);CHECK,OGATEB::R(A),XQ(b)
        • P(a);N_SPINQ(b),XR(A)::B(G)
        • Q(b);OGATEB::R(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XR(A)
    • Try
      • B(G);
      • Vars
        • Q(b);CHECK,OGATEB::R(A),XQ(b)
        • P(a);N_SPINQ(b),XR(A)::B(G)
        • Q(b);OGATEB::R(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XR(A)
    • Try
      • R(A);
      • Vars
        • Q(b);CHECK,OGATEB::R(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XR(A)
    • Try
      • R(B);XP(a)
      • Threat
        • B(G)
      • Vars
        • Q(b);CHECK,OGATEB::R(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),P_PINR(B),XR(A)
    • Try
      • Q(F);
      • Vars
        • Q(b);CHECK,OGATEB::R(A),XQ(b)
        • P(a);N_SPINQ(b),XR(A)::B(G)
        • Q(b);OGATEB::R(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XR(A)
    • Try
      • Q(F);
      • Vars
        • Q(b);CHECK,OGATEB::R(A),XQ(b)
        • P(a);N_SPINQ(b),XR(A)::B(G)
        • P(a);XQ(F)::B(G)
        • Q(b);OGATEB::R(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XR(A)
    • Try
      • Q(F);
      • Threat
        • DUALS(3)
      • Vars
        • Q(b);CHECK,OGATEB::R(A),XQ(b)
        • Q(b);OGATEB::R(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XR(A)
    • Try
      • Q(F);
      • Threat
        • QAB(F)
      • Vars
        • Q(b);CHECK,OGATEB::R(A),XQ(b)
        • Q(b);OGATEB::R(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XR(A)
    • Try
      • Q(F);
      • Threat
        • QAB(F)
      • Vars
        • Q(b);CHECK,OGATEB::R(A),XQ(b)
        • Q(b);OGATEB::R(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XR(A)
    • Try
      • Q(F);
      • Threat
        • DUALS(3)
      • Vars
        • Q(b);CHECK,OGATEB::R(A),XQ(b)
        • Q(b);OGATEB::R(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XR(A)
    • Try
      • Q(F);
      • Threat
        • QAR(F)
      • Vars
        • Q(b);CHECK,OGATEB::R(A),XQ(b)
        • P(a);N_SPINQ(b),XR(A)::B(G)
        • Q(b);OGATEB::R(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XR(A)
    • Try
      • Q(F);
      • Threat
        • QAB(F)
      • Vars
        • Q(b);CHECK,OGATEB::R(A),XQ(b)
        • Q(b);OGATEB::R(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XR(A)
    • Try
      • Q(F);
      • Vars
        • Q(b);CHECK,OGATEB::R(A),XQ(b)
        • P(a);N_SPINQ(b),XR(A)::B(G)
        • Q(b);OGATEB::R(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XR(A)
    • Try
      • Q(F);
      • Vars
        • Q(b);CHECK,OGATEB::R(A),XQ(b)
        • P(a);N_SPINQ(b),XR(A)::B(G)
        • Q(b);OGATEB::R(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XR(A)
    • Try
      • Q(F);
      • Vars
        • Q(b);CHECK,OGATEB::R(A),XQ(b)
        • P(a);N_SPINQ(b),XR(A)::B(G)
        • Q(b);OGATEB::R(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XR(A)
    • Try
      • Q(F);XP(e)
      • Threat
        • DUALS(3)
      • Vars
        • Q(b);CHECK,OGATEB::R(A),XQ(b)
        • Q(b);OGATEB::R(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XR(A)
    • Try
      • Q(F);
      • Vars
        • Q(b);CHECK,OGATEB::R(A),XQ(b)
        • P(a);N_SPINQ(b),XR(A)::B(G)
        • Q(b);OGATEB::R(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XR(A)
    • Try
      • Q(F);
      • Threat
        • QAB(F)
      • Vars
        • Q(b);CHECK,OGATEB::R(A),XQ(b)
        • Q(b);OGATEB::R(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XR(A)
  • Actual
    • Q(F);
    • Threat
      • DUALS(4)
    • Vars
      • Q(b);CHECK,OGATEB::R(A),XQ(b)
      • Q(b);N_SPINQ(b),XR(A)::QAB(F)+K(C)
      • P(a);N_SPINQ(b),XR(A)::B(G)
      • Q(b);OGATEB::R(A),XQ(b)
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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).