MESON Chess Problem Database

Problem Display
PID: 267544 (8/8/1QB5/8/8/4R3/3K2pk/8 w - - 0 1)

Atanasievic, Aleksandar

Politika, 1963

8/8/1QB5/8/8/4R3/3K2pk/8

#2

4 + 2

261 Mat 1980
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kh1
      • 2.Rh3#
    • 1...g1S
      • 2.Qc7#
      • 2.Qb8#
    • 1...g1B
      • 2.Qc7#
      • 2.Qb8#
  • Tries
    • 1.Be4?
      • 1...Kh1
        • 2.Rh3#
      • 1...g1Q
        • 2.Qh6#
      • 1...g1S
        • 2.Qc7#
        • 2.Qd6#
        • 2.Qb8#
      • 1...g1B
        • 2.Qc7#
        • 2.Qd6#
        • 2.Qh6#
        • 2.Qb8#
      • 1...g1R
        • 2.Qh6#
      • 1...Kg1!
    • 1.Bd5?
      • 1...Kh1
        • 2.Rh3#
      • 1...g1Q
        • 2.Qh6#
      • 1...g1S
        • 2.Qc7#
        • 2.Qd6#
        • 2.Qb8#
      • 1...g1B
        • 2.Qc7#
        • 2.Qd6#
        • 2.Qh6#
        • 2.Qb8#
      • 1...g1R
        • 2.Qh6#
      • 1...Kg1!
    • 1.Bb7?
      • 1...Kh1
        • 2.Rh3#
      • 1...g1Q
        • 2.Qh6#
      • 1...g1S
        • 2.Qc7#
        • 2.Qd6#
      • 1...g1B
        • 2.Qc7#
        • 2.Qd6#
        • 2.Qh6#
      • 1...g1R
        • 2.Qh6#
      • 1...Kg1!
    • 1.Ba8?
      • 1...Kh1
        • 2.Rh3#
      • 1...g1Q
        • 2.Qh6#
      • 1...g1S
        • 2.Qc7#
        • 2.Qd6#
        • 2.Qb8#
      • 1...g1B
        • 2.Qc7#
        • 2.Qd6#
        • 2.Qh6#
        • 2.Qb8#
      • 1...g1R
        • 2.Qh6#
      • 1...Kg1!
    • 1.Rg3?
      • 1...Kh1
        • 2.Rh3#
      • 1...g1Q
        • 2.Qxg1#
      • 1...g1S
        • 2.Qxg1#
        • 2.Qf2#
      • 1...g1B
        • 2.Qxg1#
      • 1...g1R
        • 2.Qxg1#
      • 1...Kxg3!
    • 1.Qd4?
      • 1...Kh1
        • 2.Rh3#
      • 1...g1Q
        • 2.Qh8#
        • 2.Qh4#
      • 1...g1S
        • 2.Qe5#
        • 2.Qf4#
        • 2.Qd6#
      • 1...g1B
        • 2.Qe5#
        • 2.Qh8#
        • 2.Qf4#
        • 2.Qh4#
        • 2.Qd6#
      • 1...g1R
        • 2.Qh8#
        • 2.Qh4#
      • 1...Kg1!
    • 1.Qc5?
      • 1...Kh1
        • 2.Rh3#
      • 1...g1Q
        • 2.Qh5#
      • 1...g1S
        • 2.Qd6#
        • 2.Qe5#
      • 1...g1B
        • 2.Qd6#
        • 2.Qe5#
        • 2.Qh5#
      • 1...g1R
        • 2.Qh5#
      • 1...Kg1!
    • 1.Qa7?
      • 1...Kh1
        • 2.Rh3#
      • 1...g1Q
        • 2.Qh7#
      • 1...g1S
        • 2.Qb8#
        • 2.Qc7#
      • 1...g1B
        • 2.Qb8#
        • 2.Qc7#
        • 2.Qh7#
      • 1...g1R
        • 2.Qh7#
      • 1...Kg1!
    • 1.Qc7+?
      • 1...Kh1
        • 2.Re1#
      • 1...Kg1!
    • 1.Qb8+?
      • 1...Kh1
        • 2.Re1#
      • 1...Kg1!
  • Keys
    • 1.Qb1!
      • 1...g1Q
        • 2.Qh7#
      • 1...g1S
        • 2.Qb8#
      • 1...g1B
        • 2.Qh7#
        • 2.Qb8#
      • 1...g1R
        • 2.Qh7#

This anticipates 10813(1968)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(b);N_GUARD,P-FLIGHT,P_SPINP(a)::R(B)
  • Tries
    • Try
      • B(D);
      • Vars
        • K(b);N_GUARD,P-FLIGHT,P_SPINP(a)::R(B)
        • P(a);SBLOCK::QAR(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(D);
      • Vars
        • K(b);N_GUARD,P-FLIGHT,P_SPINP(a)::R(B)
        • P(a);SBLOCK::QAR(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(D);
      • Vars
        • K(b);N_GUARD,P-FLIGHT,P_SPINP(a)::R(B)
        • P(a);SBLOCK::QAR(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(D);
      • Vars
        • K(b);N_GUARD,P-FLIGHT,P_SPINP(a)::R(B)
        • P(a);SBLOCK::QAR(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(B);
      • Vars
        • K(b);N_GUARD,P-FLIGHT,P_SPINP(a)::R(B)
        • P(a);::QAB1(C),XQ(a)
        • P(a);::QAB1(C),XB(a)
        • P(a);::QAB1(C),XR(a)
      • Refutation
        • K(b);S_FLIGHT,XR(B)
    • Try
      • Q(C);
      • Vars
        • K(b);N_GUARD,P-FLIGHT,P_SPINP(a)::R(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(b);N_GUARD,P-FLIGHT,P_SPINP(a)::R(B)
        • P(a);SBLOCK::QAR(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(b);N_GUARD,P-FLIGHT,P_SPINP(a)::R(B)
        • P(a);SBLOCK::QAR(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);N_GUARD,P-FLIGHT,P_SPINP(a)::R(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);N_GUARD,P-FLIGHT,P_SPINP(a)::R(B)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(C);
    • Vars
      • P(a);SBLOCK::QAR(C)
      • P(a);SBLOCK::QAB(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).