MESON Chess Problem Database

Problem Display
PID: 275571 (B5b1/nq1p2K1/5PN1/3k1P2/1RR4p/1Q4br/2p5/3r4 w - - 0 1)

Kuznetsov, Mikhail Pavlovich

Comm., Buletin Problemistic, 1975

B5b1/nq1p2K1/5PN1/3k1P2/1RR4p/1Q4br/2p5/3r4

#2

8 + 10

15601 Albrecht-Leiss-Degener Collection 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Qc6
      • 2.Rxc6#
    • 1...Ra1
      • 2.Qd3#
    • 1...Rb1
      • 2.Qd3#
    • 1...Rc1
      • 2.Qd3#
    • 1...Re1
      • 2.Qd3#
    • 1...Rf1
      • 2.Qd3#
    • 1...Rg1
      • 2.Qd3#
    • 1...Rdh1
      • 2.Qd3#
    • 1...Rd3
      • 2.Qxd3#
    • 1...Bd6
      • 2.Rc3#
    • 1...d6+
      • 2.Rc7#
  • Tries
    • 1.Bxb7+?
      • 1...Sc6
        • 2.Rxc6#
      • 1...Kd6!
    • 1.Rb5+?
      • 1...Kd6
        • 2.Qa3#
        • 2.Qb4#
      • 1...Sxb5!
  • Keys
    • 1.Qe3!
      • threat
        • 2.Qc5#
      • 1...d6+
        • 2.Se7#
      • 1...Kd6
        • 2.Qc5#
      • 1...Rd4
        • 2.Qxd4#
      • 1...Bf2
        • 2.Qe5#
      • 1...Bd6
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • Q(h);::QAB(A)+R(C),XQ(h)
    • R(a);N_GUARD::QAR2(A)
    • R(a);N_GUARD::QAR2(A),XR(a)
    • B(c);SBLOCK::QAB(A)+R(C)
    • P(i);CHECK,SBLOCK::QAB(A)+R(C)
  • Tries
    • Try
      • B(H);CHECK,XQ(h)
      • Vars
        • S(g);P_SPINS(g)::QAB(A)+R(C),XS(g)
      • Refutation
        • K(f);P-FLIGHT
    • Try
      • R(B);CHECK
      • Refutation
        • S(g);XR(B)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • P(i);CHECK,SBLOCK::S(F)
      • K(f);N_SPINQ(h),P-FLIGHT::QAB1(A)
      • R(a);N_GUARD::QAR1(A),XR(a)
      • B(c);N_GUARD::QAR1(A)
      • B(c);SBLOCK::QAB1(A)
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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).