MESON Chess Problem Database

Problem Display
PID: 125967 (3BB3/2Nr2n1/8/pQ2p3/1p1k4/1n3P2/3r1b2/1b1NR2K w - - 0 1)

Sushkov, Yuri Akimovich

USSR Championship, 1964

3BB3/2Nr2n1/8/pQ2p3/1p1k4/1n3P2/3r1b2/1b1NR2K

#2

8 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rc2
      • 2.Re4#
    • 1...Rd3
      • 2.Re4#
    • 1...Rd5
      • 2.Qxd5#
    • 1...Re7
      • 2.Qd5#
    • 1...Rf7
      • 2.Qd5#
    • 1...Ba2
      • 2.Re4#
    • 1...Be4
      • 2.Rxe4#
    • 1...Sf5
      • 2.Se6#
    • 1...Sh5
      • 2.Se6#
    • 1...Se6
      • 2.Sxe6#
    • 1...Sxe8
      • 2.Se6#
    • 1...e4
      • 2.Bf6#
  • Tries
    • 1.Qxb4+?
      • 1...Kd3
        • 2.Qc3#
        • 2.Qe4#
      • 1...axb4!
    • 1.Qxe5+?
      • 1...Kd3
        • 2.Qe4#
      • 1...Kc4!
  • Keys
    • 1.Bf7!
      • threat
        • 2.Qc4#
      • 1...Rxc7
        • 2.Qd5#
      • 1...Rxf7
        • 2.Qd5#
      • 1...Rc2
        • 2.Re4#
      • 1...Rd5
        • 2.Qxd5#
      • 1...Bd3
        • 2.Qxe5#
      • 1...Se6
        • 2.Sxe6#
      • 1...e4
        • 2.Bf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • R(b);S_CUTB(a)::R1(B)
    • R(i);N_GUARD::QAR1(E),XR(i)
    • R(i);N_GUARD::QAR1(E)
    • B(a);N_GUARD::R1(B)
    • B(a);N_GUARD,P_PINP(D)::R1(B),XB(a)
    • S(j);N_GUARD::S(F)
    • S(j);N_GUARD::S(F),XS(j)
    • S(j);N_GUARD,XB(H)::S(F)
    • P(h);OGATEB::B(G)
  • Tries
    • Try
      • Q(E);CHECK,XP(e)
      • Refutation
        • P(g);XQ(E)
    • Try
      • Q(E);CHECK,XP(h)
      • Vars
        • K(f);P-FLIGHT::QAB1(E)
      • Refutation
        • K(f);P-FLIGHT
  • Actual
    • B(H);
    • Threat
      • QAR1(E)
    • Vars
      • R(i);N_GUARD,XS(F)::QAR1(E)
      • R(i);N_GUARD,XB(H)::QAR1(E)
      • R(b);S_CUTB(a)::R1(B)
      • R(i);N_GUARD::QAR1(E),XR(i)
      • B(a);SBLOCK::QAB1(E),XP(h)
      • S(j);N_GUARD::S(F),XS(j)
      • P(h);OGATEB::B(G)
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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).