MESON Chess Problem Database

Problem Display
PID: 140284 (3R4/1N1r1NB1/4QR2/2PB1P2/3k4/4p2K/2pnp3/8 w - - 0 1)

Oreshin, Aleksandr G

Shakhmaty v SSSR, 1949

3R4/1N1r1NB1/4QR2/2PB1P2/3k4/4p2K/2pnp3/8

#2

10 + 6

SOLUTION

  • SOUND
  • Tries
    • 1.Qxe3+?
      • 1...Kxd5
        • 2.Qd3#
      • 1...Kxe3!
    • 1.Qe4+?
      • 1...Kc3
        • 2.Ra6#
        • 2.Rb6#
        • 2.Rc6#
        • 2.Rd6#
        • 2.Re6#
        • 2.Rg6#
        • 2.Rh6#
      • 1...Sxe4!
  • Keys
    • 1.Qa6!
      • threat
        • 2.Rd6#
      • 1...Kc3
        • 2.Rb6#
      • 1...Kxd5
        • 2.Qd3#
      • 1...Rxd5
        • 2.Re6#
      • 1...Rxb7
        • 2.Rc6#
      • 1...Rxf7
        • 2.Rxf7#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Rd6
        • 2.Rfxd6#
      • 1...Re7
        • 2.Re6#
      • 1...Sf3
        • 2.Qc4#
      • 1...Se4
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);CHECK,XP(d)
      • Vars
        • K(e);P-FLIGHT,P_SPINR(f),XB(C)::QAR2(E)
      • Refutation
        • K(e);S_FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK
      • Refutation
        • S(b);XQ(E)
  • Actual
    • Q(E);
    • Threat
      • B(I)+R(F)
    • Vars
      • K(e);S_FLIGHT::B(I)+R(F)
      • K(e);P-FLIGHT,P_SPINR(f),XB(C)::QAR2(E)
      • R(f);P_SPINR(f),XB(C)::B(I)+R(F)
      • R(f);XS(G)::B(I)+R(F)
      • R(f);OGATE,XS(H)::B(I)+R(F),XR(f)
      • S(b);N_GUARD::QAR1(E),XS(b)
      • R(f);::B(I)+R(F),XR(f)
      • R(f);::B(I)+R(F)
      • S(b);N_GUARD::QAR1(E)
HTML5 logo

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).