MESON Chess Problem Database

Problem Display
PID: 149815 (3R4/2p2r2/2P1kpbR/8/1Q2p1NP/4K3/8/8 w - - 0 1)

Buchbinder, Grigory J

Sachove umeni (Ceskoslovensky sach), 1974

3R4/2p2r2/2P1kpbR/8/1Q2p1NP/4K3/8/8

#2

7 + 6

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Qxe4#
    • 1...Bh5
      • 2.Qxe4#
  • Tries
    • 1.Qc4+?
      • 1...Kf5
        • 2.Qxe4#
      • 1...Ke7!
  • Keys
    • 1.Qd4!
      • 1...Kf5
        • 2.Qxe4#
      • 1...Ke7
        • 2.Qd7#
      • 1...Rd7
        • 2.Qxd7#
      • 1...Rg7
        • 2.Qxf6#
      • 1...Rh7
        • 2.Qxf6#
      • 1...Rf8
        • 2.Qd7#
      • 1...Re7
        • 2.Qxf6#
        • 2.Qd5#
      • 1...Bf5
        • 2.Qe5#
      • 1...Bh5
        • 2.Qe5#
        • 2.Qxe4#
      • 1...Bh7
        • 2.Qe5#
      • 1...f5
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • K(b);S_FLIGHT::QAB1(B),XP(a)
    • B(d);N_GUARD,P_SPINP(c)::QAR2(B),XP(a)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(B),XP(a)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(b);S_FLIGHT::QAB1(B),XP(a)
      • K(b);P-FLIGHT::QAR1(B)
      • R(f);N_GUARD::QAB1(B),XR(f)
      • R(f);N_GUARD::QAR1(B),XP(c)
      • R(f);N_GUARD::QAB1(B)
      • B(d);P_SPINP(c)::QAR1(B)
      • P(c);N_GUARD,P_SPINB(d)::QAR1(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).